1. Why Business Connectivity Matters More Than Ever

Ten years ago, a business internet connection was a convenience. In 2026, it is the foundation that everything else sits on. Your phone system, your payment terminals, your cloud applications, your security cameras, your team's ability to work from anywhere — all of it depends on a reliable, fast, and properly managed internet connection.

The shift has been dramatic. According to Ofcom, over 85% of UK businesses now use cloud-based services as their primary software platform. Microsoft 365, Google Workspace, Xero, Sage, Salesforce — none of these work without internet. When your connection drops, your business stops.

Here in Northern Ireland, the picture is the same. Belfast businesses are running VoIP phone systems that route every call through the internet. Retail shops in Lisburn process card payments over broadband. Accountancy firms in Newry access client files through cloud storage. A connectivity failure doesn't just slow things down — it shuts the doors.

The PSTN Switch-Off Changes Everything

The UK's Public Switched Telephone Network (PSTN) is being permanently switched off by January 2027. Every traditional phone line, every ISDN connection, every analogue service will cease to function. Every business in the UK must move to internet-based communications — VoIP, SIP trunking, or hosted telephony. This makes your internet connection the single point of failure for both your data and your voice communications.

If your broadband goes down after the PSTN switch-off, you lose your phones too. That reality alone should change how every business thinks about connectivity, redundancy, and failover.

Remote and Hybrid Working

The post-pandemic shift to hybrid working is permanent. Your office connection needs to support VPN tunnels for remote staff, video conferencing platforms like Teams and Zoom, and cloud collaboration tools — all simultaneously. A connection that was adequate for 15 people in an office may buckle under the demands of 15 people in the office plus 10 connecting remotely.

The businesses that thrive in 2026 are the ones that treat connectivity as critical infrastructure — planned, managed, and protected with the same rigour as their physical premises.

2. Fibre Broadband (FTTP and FTTC)

Fibre broadband is the most common business internet connection in the UK, but the term covers two very different technologies. Understanding the difference is essential to making the right choice. For a deeper comparison, see our guide to the best broadband for small businesses in the UK.

FTTC — Fibre to the Cabinet

FTTC runs fibre optic cable from the exchange to a green street cabinet near your premises, then uses the existing copper telephone line for the final stretch. This "last mile" of copper is the bottleneck. Typical speeds are 40–80Mbps download and 10–20Mbps upload, but actual performance depends heavily on your distance from the cabinet. If you're 500 metres away, you might get 60Mbps. At 1,500 metres, you could be looking at 20Mbps or less.

FTTC is widely available across Northern Ireland — most urban and suburban areas in Belfast, Derry, Lisburn, and Bangor have coverage. It's affordable (typically £25–£50/month for business packages) and adequate for small offices with basic internet needs. However, the asymmetric speeds (much slower upload than download) make it a poor choice for businesses that rely heavily on cloud backups, video conferencing, or VoIP.

FTTP — Fibre to the Premises

FTTP runs fibre optic cable directly into your building, eliminating the copper bottleneck entirely. Speeds range from 100Mbps to over 1Gbps, with symmetrical upload options available. This is the connection type that most businesses should be targeting in 2026.

FTTP availability has expanded rapidly across Northern Ireland thanks to Openreach and alternative network providers like Fibrus. Belfast city centre, many parts of Lisburn, Newry, and Craigavon now have full fibre coverage. Typical business FTTP packages cost £30–£80/month depending on speed tier.

Contention and the Reality of Shared Bandwidth

Both FTTC and FTTP are contended services. This means you share bandwidth with other users on the same exchange or distribution point. Contention ratios for business broadband are typically 20:1 (twenty users sharing the same capacity), compared to 50:1 for consumer packages. During peak hours — 9am to 5pm, exactly when your business needs it most — speeds can drop noticeably.

This is the fundamental limitation of broadband compared to a leased line. Broadband speeds are advertised as "up to" a certain figure. There is no guarantee you'll achieve that speed at any given moment, and no compensation if you don't.

Pros and Cons of Fibre Broadband

• Pros: Affordable, widely available, fast installation (1–2 weeks), sufficient for many SMEs, multiple speed tiers available
• Cons: Contended (shared) bandwidth, no speed guarantees, no uptime SLA, asymmetric speeds on FTTC, slower fault repair times (24–72 hours typical)

3. Leased Lines

A leased line is a dedicated, private internet connection between your premises and the carrier's network. Unlike broadband, the bandwidth is yours alone — uncontended, unshared, and guaranteed. For a detailed comparison, read our guide on fibre leased lines vs broadband.

How Leased Lines Work

When you order a leased line, the carrier installs a dedicated fibre connection from their nearest point of presence directly to your building. This connection carries only your traffic. If you order a 100Mbps leased line, you get 100Mbps — upload and download, symmetrically, 24 hours a day, 365 days a year. There is no contention, no peak-hour slowdown, and no "up to" in the speed specification.

What You Get with a Leased Line

• Guaranteed symmetric speeds: 10Mbps to 10Gbps, with the exact speed you pay for delivered consistently
• Uptime SLA: Typically 99.9% to 99.99%, with financial penalties if the carrier fails to meet it
• Fast fault repair: 4–6 hour fix times are standard, compared to 24–72 hours for broadband
• Static IP addresses: A block of static IPs included as standard
• Dedicated support: Priority access to the carrier's engineering team, not a consumer helpdesk
• Proactive monitoring: Many carriers monitor leased lines 24/7 and can detect and resolve issues before you notice them

Typical Costs

Leased lines cost more than broadband — typically £150–£500/month depending on speed and location. Installation can take 30–90 days as physical fibre may need to be laid to your premises. The cost reflects the dedicated infrastructure and guaranteed service levels. For businesses where downtime costs hundreds or thousands of pounds per hour, a leased line pays for itself many times over.

In Belfast and across Northern Ireland, leased line availability has improved significantly. Most business parks, industrial estates, and commercial areas in Belfast, Lisburn, Derry, and Newry can now access leased line services. Rural areas may require longer installation times and higher costs due to the distance from the nearest point of presence.

Who Needs a Leased Line?

Any business where internet downtime directly costs money. That includes businesses running VoIP phone systems as their only communication channel, companies processing online payments, organisations using cloud-hosted line-of-business applications, and any business with regulatory requirements for data availability. If you have 30 or more employees, or if your business simply cannot function without internet, a leased line should be your primary connection.

4. Understanding SLAs

A Service Level Agreement (SLA) is a contractual commitment from your internet provider that defines exactly what level of service you'll receive — and what happens when they fail to deliver it. SLAs are the dividing line between business-grade and consumer-grade connectivity. For a full explanation, see our guide on what an SLA means for business internet.

What an SLA Covers

• Uptime guarantee: Expressed as a percentage — 99.9% means no more than 8.76 hours of downtime per year. 99.99% means no more than 52.6 minutes. The difference matters enormously for businesses that depend on constant connectivity.
• Fault repair time: The maximum time the carrier has to restore your service after a fault is reported. Leased line SLAs typically guarantee 4–6 hour repair times. Some offer enhanced SLAs with 2-hour response for critical circuits.
• Speed guarantee: The minimum speed your connection will deliver. Unlike broadband's "up to" figures, an SLA-backed connection guarantees a specific throughput at all times.
• Compensation: If the carrier breaches the SLA, you're entitled to service credits or financial compensation. This creates a genuine incentive for the carrier to maintain your service.

Why Broadband Doesn't Have an SLA

Standard broadband — even business-branded broadband — operates on a "best effort" basis. The provider will try to deliver the advertised speed and try to fix faults promptly, but there is no contractual obligation to do either. If your broadband drops at 9am on a Monday and isn't restored until Wednesday, your provider owes you nothing beyond a small credit on your bill. Read more about why broadband has no SLA and the difference between guaranteed uptime and best-effort service.

This is the single most important distinction in business connectivity. If your business can tolerate a day or two of downtime without significant financial impact, broadband may be sufficient. If it can't, you need an SLA-backed connection — and that means a leased line or an SLA-enhanced business broadband product.

Reading the Fine Print

Not all SLAs are created equal. When evaluating an SLA, look for the specific uptime percentage (not vague promises of "high availability"), the exact fault repair time in hours (not "as soon as possible"), whether compensation is automatic or requires you to claim it, and what exclusions apply (planned maintenance windows, force majeure events, faults on your own equipment). A good provider will walk you through their SLA in plain English and explain exactly what you're covered for.

5. 4G and 5G Business Internet

Mobile broadband has evolved from a stopgap measure into a genuine business connectivity option. Whether as a primary connection for sites where fixed-line isn't available, or as a failover backup for any business, 4G and 5G deserve a place in your connectivity strategy. For a technical comparison, see our guide on the difference between 4G and 5G broadband.

4G Business Internet

4G coverage across Northern Ireland is extensive — EE, Three, Vodafone, and O2 all provide strong coverage in Belfast, Derry, and most towns. Typical 4G speeds are 20–50Mbps download and 10–20Mbps upload, which is sufficient for email, web browsing, cloud applications, and even VoIP for small teams. 4G routers can be deployed in hours, making them ideal for temporary sites, pop-up offices, construction projects, and events.

5G Business Internet

5G takes mobile broadband to another level. In areas with coverage, 5G delivers 100–500Mbps download speeds with latency as low as 10–20ms. That's comparable to fibre broadband and sufficient for most business applications including video conferencing and cloud computing. The question of whether 5G can replace fibre broadband is increasingly relevant — for some businesses, particularly those in temporary or hard-to-reach locations, the answer is yes.

5G coverage in Northern Ireland is still expanding. Belfast city centre has good 5G coverage from EE and Three, with Vodafone and O2 rolling out through 2026. Outside Belfast, 5G coverage is patchy and shouldn't be relied upon as a primary connection without a site survey to confirm signal strength.

Multi-Network SIMs

One of the most significant developments in mobile broadband is the multi-network SIM. These SIMs can connect to any available network (EE, Three, Vodafone, O2) and automatically switch to the strongest signal. This dramatically improves reliability — if one network has an outage or poor signal at your location, the SIM switches to another. For failover applications, multi-network SIMs provide an extra layer of resilience that single-network SIMs cannot match.

Costs and Considerations

Business 4G/5G packages typically cost £20–£60/month for unlimited data on a single network, or £30–£80/month for multi-network SIMs. Hardware costs for a quality business router (such as the Peplink or Cradlepoint range) are £200–£800 depending on features. For guidance on hardware, see our roundup of the best 5G routers for business.

The key limitations of mobile broadband are contention (shared with all mobile users in your area), variable speeds depending on network load and signal strength, and data caps on some plans. For primary business use, always choose an unlimited data plan and test signal strength at your premises before committing.

6. Internet Failover and Business Continuity

Internet failover is the practice of maintaining a secondary internet connection that activates automatically when your primary connection fails. In 2026, with every business phone call, payment, and cloud application depending on internet connectivity, failover has moved from "nice to have" to essential. For a complete overview, read our guide on what internet failover is and how it works.

The Cost of Downtime

Research consistently shows that the average cost of internet downtime for a UK SME is between £800 and £1,600 per hour. That includes lost sales, lost productivity, missed calls, failed card payments, and reputational damage. A single four-hour outage can cost a small business more than an entire year of failover service. For businesses in Belfast and across Northern Ireland, where many now rely entirely on VoIP phones and cloud software, the impact of an outage is immediate and total.

How Automatic Failover Works

A failover system uses a router or gateway with two or more WAN connections. Your primary connection (typically fibre broadband or a leased line) handles all traffic under normal conditions. If the router detects that the primary connection has failed — through continuous ping monitoring or link-state detection — it automatically switches all traffic to the secondary connection (typically 4G/5G) within seconds. When the primary connection recovers, traffic switches back automatically.

The switchover is seamless for most applications. Web browsing, email, and cloud applications continue without interruption. VoIP calls in progress may drop during the switchover (a few seconds), but new calls will route over the backup connection immediately. For detailed implementation options, see our guides on business continuity internet solutions and SIM failover for business continuity.

Failover Options

• 4G/5G Router Failover: The most common and cost-effective option. A 4G/5G router with a multi-network SIM sits alongside your primary router and takes over when needed. Cost: £20–£60/month for the SIM plus £200–£500 for the router.
• Dual-WAN Gateway: A single router with two WAN ports — one for your primary broadband and one for your backup connection. Devices like the Peplink Balance, DrayTek Vigor, and TP-Link ER series handle failover automatically and can also load-balance across both connections during normal operation.
• Dual Broadband: Two separate broadband connections from different carriers, ideally using different physical infrastructure (e.g., one Openreach FTTP and one Fibrus FTTP, or one fibre and one cable). More expensive but provides higher bandwidth during normal operation.
• Starlink Backup: For businesses in areas with poor 4G coverage, Starlink can serve as a failover connection. It's more expensive than 4G (£75/month plus hardware) but works anywhere with a clear sky view.

Our Recommendation

For most businesses in Northern Ireland, the optimal failover setup is fibre broadband (FTTP) as the primary connection with a 4G/5G multi-network SIM as backup, managed through a dual-WAN router. Total additional cost for failover: approximately £40–£80/month. That's a fraction of what even one hour of downtime would cost.

7. Starlink for Business

SpaceX's Starlink satellite internet has changed the game for businesses in locations where traditional broadband and mobile coverage are unavailable or unreliable. Across rural Northern Ireland — from the Sperrins to the Glens of Antrim, from Fermanagh to the Ards Peninsula — Starlink is providing broadband-grade connectivity to businesses that previously had no viable option. For a full overview, see our guide on what Starlink is and how it works.

How Starlink Works

Starlink uses a constellation of thousands of low-Earth orbit (LEO) satellites, orbiting at approximately 550km altitude — far closer than traditional geostationary satellites at 36,000km. This proximity dramatically reduces latency. The Starlink dish (a flat, self-orienting antenna) communicates with the nearest satellites, which relay your traffic to a ground station connected to the internet backbone.

Performance in the UK

In the UK, Starlink typically delivers 50–200Mbps download and 10–30Mbps upload speeds. Latency ranges from 25–60ms, which is higher than fibre (5–15ms) but dramatically better than traditional satellite internet (600ms+). For web browsing, email, cloud applications, and video conferencing, Starlink performs well. For a detailed comparison with other technologies, read our analysis of Starlink vs 5G vs fibre.

Business Use Cases

• Rural primary connection: For farms, rural hotels, countryside offices, and businesses in areas with no fibre or 4G coverage, Starlink may be the only viable broadband-speed connection. Many agricultural businesses across County Tyrone, Fermanagh, and rural Antrim are now using Starlink as their primary internet.
• Backup/failover connection: For any business, Starlink can serve as a backup connection that's completely independent of terrestrial infrastructure. If a digger cuts through the fibre cable serving your street, Starlink keeps working.
• Temporary and mobile sites: Construction sites, outdoor events, and temporary offices can have broadband-speed internet within minutes of setting up the dish.

Limitations

Starlink is not a replacement for fibre or leased lines where those are available. The higher latency (25–60ms) can cause noticeable delays on VoIP calls and may affect call quality during peak satellite congestion. Speeds are variable and can drop during periods of heavy network usage. The dish requires a clear view of the sky — obstructions from trees or buildings will degrade performance. There is no SLA, no guaranteed speeds, and no priority fault repair. For a balanced assessment, see our article on whether Starlink is worth it for UK businesses.

Costs

Starlink Business costs approximately £75/month with a one-off hardware cost of around £450 for the dish and router. The standard residential plan (£40/month) can also be used for business, though the Business plan offers priority data and higher speeds during congestion. There are no long-term contracts — you can cancel monthly.

8. Business WiFi

Your internet connection is only as good as the WiFi network that distributes it around your premises. A 500Mbps fibre connection is worthless if your WiFi drops out in the meeting room, crawls in the warehouse, or can't handle 30 devices simultaneously. Business WiFi is a discipline in itself, and getting it right requires proper planning, proper equipment, and proper configuration. For product recommendations, see our guide to the best business WiFi systems.

Why Consumer Routers Fail in Business

The WiFi router your ISP provides — or the consumer mesh system you bought from Amazon — is designed for a household of 5–10 devices streaming video and browsing the web. A typical business environment is fundamentally different: 20–100+ devices (laptops, phones, tablets, printers, VoIP handsets, CCTV cameras, IoT sensors), all competing for bandwidth simultaneously, many running latency-sensitive applications like VoIP and video conferencing.

Consumer routers lack the processing power, antenna design, and management features to handle this load. They overheat, drop connections, create bottlenecks, and provide no visibility into what's happening on your network. The result is intermittent WiFi issues that are maddening to diagnose and impossible to fix without replacing the hardware.

Business Access Points

Business WiFi uses dedicated access points (APs) — ceiling or wall-mounted units designed to serve dozens of simultaneous connections with consistent performance. Each AP covers a specific area, and multiple APs work together to provide seamless coverage across your entire premises. The two leading platforms for SME WiFi are TP-Link Omada and Ubiquiti UniFi. For a head-to-head comparison, read our guide on TP-Link Omada vs Ubiquiti UniFi.

Site Surveys

A professional WiFi site survey maps your premises to determine the optimal number and placement of access points. It accounts for wall materials (brick and concrete block WiFi signals far more than plasterboard), floor plans, interference sources, and the number of devices in each area. Without a site survey, you're guessing — and guessing leads to dead spots, interference, and wasted money on access points in the wrong locations. For a step-by-step guide, see how to set up office WiFi properly.

Guest WiFi and VLANs

Every business that offers WiFi to visitors, customers, or guests should run it on a separate network — a VLAN (Virtual Local Area Network) that is completely isolated from your internal business network. This prevents guests from accessing your file servers, printers, or other internal resources, and protects your business network from any malware on guest devices.

Business access points from TP-Link Omada and Ubiquiti UniFi support multiple SSIDs (network names) on separate VLANs, captive portals for guest login, bandwidth limits per user, and usage logging for compliance. For businesses in hospitality, retail, or healthcare, proper guest WiFi isn't just good practice — it's a regulatory requirement. For more on this topic, see our guide on mesh WiFi vs access points.

WiFi 6 and WiFi 7

WiFi 6 (802.11ax) is now the standard for business access points, offering significantly better performance in dense environments with many devices. WiFi 6E extends this into the 6GHz band, providing additional channels and less interference. WiFi 7 (802.11be) is beginning to appear in enterprise hardware, promising even higher throughput and lower latency. For most businesses deploying new WiFi in 2026, WiFi 6 or WiFi 6E access points offer the best balance of performance, compatibility, and cost.

9. Network Security

A fast, reliable internet connection is a liability if it isn't properly secured. Every connection to the internet is a potential entry point for attackers, and businesses of all sizes are targets. The UK's National Cyber Security Centre reports that 39% of UK businesses identified a cyber attack in the past 12 months, with the average cost of a breach for an SME exceeding £8,000. For a comprehensive overview, see our guide on cybersecurity essentials for small businesses.

Firewalls

A business firewall is your first line of defence. It sits between your internal network and the internet, inspecting all incoming and outgoing traffic and blocking anything that matches known threat signatures or violates your security policies. Consumer routers include basic firewall functionality, but a dedicated business firewall (from vendors like Fortinet, SonicWall, WatchGuard, or pfSense) provides deep packet inspection, intrusion detection and prevention, content filtering, and VPN termination. For product guidance, see our guides on what a business firewall is and the best firewalls for small businesses.

VLANs and Network Segmentation

Network segmentation divides your network into isolated zones. Your VoIP phones, CCTV cameras, guest WiFi, and business computers should each sit on separate VLANs. If a device on one VLAN is compromised, the attacker cannot move laterally to other parts of your network. This is a fundamental security practice that costs nothing beyond proper switch and access point configuration, yet many businesses in Northern Ireland still run everything on a single flat network.

Encryption

All WiFi networks should use WPA3 encryption (or WPA2 at minimum). All remote access should use encrypted VPN tunnels. All web-based applications should use HTTPS. Encryption ensures that even if an attacker intercepts your network traffic, they cannot read it. For businesses handling sensitive data — financial records, medical information, legal documents — encryption is both a security necessity and a regulatory requirement under GDPR.

Endpoint Protection

Every device on your network — laptops, desktops, phones, tablets — needs endpoint protection software that detects and blocks malware, ransomware, and phishing attacks. Modern endpoint protection goes beyond traditional antivirus to include behavioural analysis, cloud-based threat intelligence, and automated response. Solutions like Microsoft Defender for Business, SentinelOne, and CrowdStrike provide enterprise-grade protection at SME-friendly prices.

Regular Updates and Patching

The majority of successful cyber attacks exploit known vulnerabilities that have already been patched by the vendor. Keeping your routers, firewalls, access points, and all network equipment updated with the latest firmware is one of the most effective security measures you can take — and one of the most commonly neglected.

10. Choosing the Right Setup for Your Business

There is no single "best" connectivity setup — the right answer depends on your business size, location, budget, and how you use technology. Here's a practical decision framework based on the businesses we work with across Northern Ireland and the wider UK.

Micro Business (1–10 Employees)

This setup suits home offices, small retail shops, cafés, small professional services firms, and tradespeople with a fixed office. It provides reliable internet with automatic failover for under £100/month — a fraction of what even a few hours of downtime would cost.

Small Business (10–50 Employees)

This is the sweet spot for most SMEs in Belfast and Northern Ireland — accountancy firms, solicitors, medical practices, recruitment agencies, and growing businesses with 10–50 staff. The combination of fast fibre (or an entry-level leased line for businesses that need guaranteed uptime), proper failover, and managed WiFi provides enterprise-grade reliability at an affordable price.

Medium Business (50–200 Employees)

At this scale, a leased line is essential — the business cannot afford the risk of contended broadband as its primary connection. Multiple layers of failover ensure that no single point of failure can take the business offline. Professional WiFi design and network security become critical as the number of devices and users increases.

Large Business (200+ Employees)

Large businesses require enterprise-grade infrastructure with no single points of failure. Diverse-path leased lines ensure that even a physical cable cut doesn't take the business offline. SD-WAN technology connects multiple sites into a single managed network. Security operations centres provide 24/7 threat monitoring and response.

11. How Drakos Systems Can Help

Drakos Systems is a Belfast-based technology provider serving businesses across Northern Ireland and the UK. We don't just sell internet connections — we design, deploy, and manage complete connectivity solutions tailored to your business.

Every Connection Type, One Provider

We supply and manage fibre broadband (FTTP and FTTC), leased lines, 4G/5G business internet, Starlink, and everything in between. Because we work with all major UK carriers — not just one network — we source the best connection for your specific location and requirements. One relationship, one support number, one bill.

Business WiFi Design and Installation

Our engineers carry out professional site surveys and design WiFi networks that actually work — proper access point placement, correct channel planning, separate VLANs for business and guest traffic, and central management. We deploy TP-Link Omada and Ubiquiti UniFi systems and provide ongoing support and monitoring.

Failover and Business Continuity

We design and install failover solutions that keep your business online when your primary connection fails. From simple 4G backup routers to sophisticated dual-WAN gateways with multi-network SIMs, we match the solution to your risk tolerance and budget.

Managed IT and Network Security

Beyond connectivity, we provide managed IT support, business firewall deployment, endpoint protection, and ongoing network monitoring. Our ISO 27001 certification means our processes meet the highest international standards for information security management.

Business Phone Systems

Your phone system and your internet connection are now inseparable. We provide VoIP and hosted telephony solutions that integrate seamlessly with the connectivity infrastructure we design. When one team manages your internet, your WiFi, and your phones, everything works together — and when something goes wrong, there's one number to call.

Free Site Survey

Not sure where to start? We offer a free, no-obligation site survey. Our engineers will assess your premises, check available connections at your address, evaluate your current setup, and recommend the right solution for your business. Whether you're in Belfast city centre, a business park in Lisburn, or a rural site in County Fermanagh, we'll find the best option for your location.

12. Frequently Asked Questions