How to Choose the Right Internet Provider for Your New Office

Moving to a new office is one of the most significant decisions a growing business can make. Alongside finding the right location, negotiating the lease, and planning the fit-out, there is one decision that will have a disproportionate impact on your daily operations: choosing the right internet provider. Get it right, and your team will enjoy fast, reliable connectivity from day one. Get it wrong, and you could spend months battling slow speeds, dropped connections, and a provider that treats your business as an afterthought.

For UK small and medium-sized enterprises, the internet connectivity landscape in 2026 offers more choice than ever before — but more choice also means more complexity. From full-fibre leased lines to broadband bundles, from national carriers to regional specialists, the options can be overwhelming. This guide walks you through every step of choosing the right internet provider for your new office, with a specific focus on the UK market and the needs of growing businesses.

Understanding the Types of Business Internet

Before comparing providers, you need to understand the different types of internet connection available to UK businesses. Each has distinct characteristics in terms of speed, reliability, cost, and suitability for different business sizes.

Standard Business Broadband

Business broadband works similarly to home broadband but typically comes with better support, static IP addresses, and slightly higher priority on the network. Speeds range from 30Mbps to 900Mbps depending on the technology available at your address. It uses shared infrastructure, meaning speeds can fluctuate during peak times. This option suits very small businesses with fewer than 10 users and modest connectivity needs.

Full-Fibre (FTTP) Business Broadband

Full-fibre to the premises delivers speeds up to 1Gbps symmetrically (the same speed for uploads and downloads). It is significantly more reliable than older copper-based connections and offers lower latency. Availability has expanded rapidly across the UK thanks to investment from Openreach, CityFibre, and various alternative network providers. For most SMEs with 10 to 50 users, FTTP business broadband offers an excellent balance of performance and cost.

Leased Lines

A leased line is a dedicated, uncontended connection between your office and the provider's network. Unlike broadband, you do not share bandwidth with anyone else, which means guaranteed speeds at all times. Leased lines typically come with the strongest SLAs, including guaranteed fix times of 4-6 hours and uptime commitments of 99.95% or higher. They are the gold standard for businesses that depend on reliable, high-performance connectivity.

Bonded Connections

Bonded broadband combines multiple broadband lines into a single, faster connection with built-in redundancy. If one line fails, traffic automatically routes over the remaining lines. This can be a cost-effective alternative to a leased line for businesses that need resilience but cannot justify the expense of a dedicated circuit.

Connection Type	Typical Speed	Contention	SLA Fix Time	Monthly Cost
Business Broadband	30-80 Mbps	Shared (up to 50:1)	Next business day	£25-50
FTTP Business	100-900 Mbps	Shared (lower ratio)	Next business day	£40-120
Leased Line	100Mbps - 10Gbps	Uncontended (1:1)	4-6 hours	£250-800
Bonded Broadband	100-400 Mbps	Shared with failover	Next business day	£100-250

Step 1: Assess Your Bandwidth Requirements

The first step in choosing a provider is understanding how much bandwidth your business actually needs. This depends on several factors: the number of users, the applications you use, whether you operate cloud-based systems, and how heavily you rely on video conferencing.

As a rough guide, each user in a typical office environment needs between 5Mbps and 15Mbps of bandwidth for comfortable day-to-day work. A team of 20 people running Microsoft 365, Teams video calls, and cloud-based line-of-business applications would need a minimum of 100Mbps, with 200Mbps being more comfortable. If your business transfers large files, runs bandwidth-intensive applications, or hosts on-premises servers that external users connect to, you will need considerably more.

Step 2: Check What Is Available at Your New Address

Availability varies enormously across the UK. Before comparing providers, check exactly what infrastructure is available at your new office address. Use the Openreach checker for BT-based services, and also check with alternative network providers like CityFibre, Virgin Media Business, Hyperoptic, and regional providers that may serve your area.

If you are moving to a serviced office or managed workspace, ask the building management what connectivity is already in place. Many modern office buildings come with pre-installed fibre and may have agreements with specific providers. In some cases, you may have no choice — the building's infrastructure dictates the available options.

For businesses moving to a new-build or recently refurbished office, it is worth checking whether a leased line wayleave is already in place. Installing a new leased line can take 60-90 working days in the UK, so if you need dedicated connectivity, start the process as early as possible — ideally three months before your move date.

Step 3: Evaluate Providers on What Matters

Once you know what types of connection are available, it is time to compare providers. Price is important, but it should not be your primary consideration. Here are the factors that matter most for UK business connectivity.

Service Level Agreements

Compare the SLA offered by each provider carefully. Key metrics include guaranteed uptime percentage, fault response time, fault fix time, and the compensation offered when targets are missed. A leased line provider offering a 4-hour fix time is significantly better than one offering next-business-day repair, especially if your business cannot function without internet access.

Support Quality

When your internet goes down, you need to speak to someone who can help — quickly. Ask potential providers about their support arrangements. Is support available 24/7 or only during business hours? Will you speak to UK-based engineers or an overseas call centre? Is there a dedicated account manager for your business? The quality of support when things go wrong is often the biggest differentiator between providers.

Contract Length and Flexibility

Most UK business internet contracts run for 12, 24, or 36 months. Longer contracts typically offer better pricing but less flexibility. If your business is growing rapidly or you are uncertain about your long-term space requirements, a shorter contract — even at a premium — may be worth the additional cost. Check for break clauses and understand the penalties for early termination.

Scalability

Can the provider increase your bandwidth if your needs grow? Some connections, particularly leased lines, can be upgraded without changing the physical infrastructure. Others may require a completely new installation. Ask about upgrade paths and lead times before committing.

Step 4: Consider Resilience and Redundancy

For any business where internet downtime would cause significant disruption — and in 2026, that includes most businesses — having a single internet connection is a single point of failure. A resilient setup typically involves a primary connection (such as a leased line or FTTP) combined with a secondary backup (such as a 4G/5G failover connection or a second broadband line from a different provider using different infrastructure).

Automatic failover means that if your primary connection drops, traffic seamlessly switches to the backup with minimal disruption. This requires appropriate networking equipment — typically a business-grade router or SD-WAN appliance — but the cost is modest compared to the impact of a prolonged outage.

Step 5: Understand the True Costs

The monthly rental is only part of the total cost of business internet. Make sure you account for installation charges, which can range from free for standard broadband to several thousand pounds for a new leased line requiring civil engineering work. Also consider the cost of any equipment required — business-grade routers, firewalls, and managed switches are not always included in the provider's package.

Ask for a fully itemised quote that includes all one-off and recurring charges. Some providers offer attractive monthly rates but bury significant costs in setup fees, router charges, or static IP supplements. Others include everything in a single monthly price with no surprises.

Step 6: Time Your Order Correctly

Timing is critical when ordering internet for a new office. Start the process as soon as you have confirmed your new premises — ideally at least three months before your move date. This is especially important if you need a leased line, which has the longest lead time of any business connection type.

If you are working with an IT support provider, involve them early in the process. A good managed IT partner will handle the entire connectivity procurement process on your behalf, from site survey to installation to configuration of your networking equipment. This removes the burden from your team and ensures the technical setup is correct from the start.

Consider running your new connection in parallel with your old one for a transition period. This gives you time to test the new connection, migrate services, and resolve any issues before cutting over completely. The cost of running two connections for a month is trivial compared to the disruption of a botched migration.

Making Your Final Decision

Choosing an internet provider for your new office is a decision that will affect your business every single day. Take the time to assess your requirements properly, compare providers on substance rather than price alone, and plan ahead to avoid the stress of moving day without connectivity. A reliable, fast internet connection is the foundation on which every other aspect of your business technology depends.