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Leased line

With our BTnet leased line, you get a dedicated internet line and don’t share your bandwidth with anyone else. So you get exceptional speeds – with ultra-low latency – that never, ever slow down.

Pick the upload and download speeds you need, from 10 Mbps all the way up to 10Gbps. Dedicated internet access means you can send and receive massive files quickly and run bandwidth-hungry business applications like Azure and Office 365. And if you’re a smaller business, choose BTnet Express for a fixed price and fast delivery, with speeds of up to 50Mbps. Plus,in some locations, you can choose the BTnet Express 100Mbps option – giving you a faster leased line service at a great low price.

Market-leading Service Level Agreement (SLA)

We offer 100% target service availability, backed by a five-hour target fix time. Watch the video to learn more about BTnet leased lines.

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Why choose a leased line from BT Business

Britain’s No.1 for dedicated internet access

We’re ranked No.1 in the UK for leased lines by Netcraft

Symmetric speeds

With a leased line, you get symmetric upload and download speeds

BTnet – your own private line

Dedicated internet access with totally uncontended bandwidth

Unbeatable SLA

We offer a market-leading 100% target availability service level agreement

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First choose the maximum capacity of your circuit, either 100Mbps, 1Gbps or 10Gbps. You're then free to choose the speed you need.

And as your business grows, increase your leased line speed, up to your chosen capacity.


Or if you’re a smaller business, choose BTnet Express for a fixed price and fast delivery, with speeds of up to 100Mbps.

Then you’ll find new opportunities to save money and increase productivity with VoIP calling, digital conferencing and more. 



To learn more about how a leased line through BTnet can power your business , call our UK sales team.

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BTnet Express

Ideal for businesses with up to 30 users, BTnet Express offers you the maximum speed available, up to 100Mbps, for a fixed monthly fee. Enjoy symmetric upload and download speeds, plus a 100% target availability SLA.

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Our ultimate internet connection. Choose a 100Mb, 1Gb or 10Gbps circuit, then select the speed you need, from 10Mbps to 10Gbps. Ultra-fast and scalable, it lets you adjust your speeds to align with your needs.


BTnet Express

If you need a super-reliable connection at up to 50Mbps, BTnet Express is for you. Get guaranteed speed and a market-leading SLA for only £195/month (ex VAT), subject to availability and survey.


Higher speed, lower price

With new lower prices for all speeds on 1Gbps circuits, it’s time to move on from 100Mbps leased line performance – and take your internet speed to the max. 

What our customers say about BTnet leased lines

Richard Allsop, Epic Games

“All of our lines were installed on time with excellent communication from our account manager every step of the way. The service was so good that I’ve recommended BT to several other people looking for a similar service.”  

Read Epic Games customer story (PDF 209KB)

Andrew Noall, Stowford Farm Meadows

“The infrastructure is in place now behind the scenes, and the service is strong enough to support what we need. And that’s what’s making the fundamental difference to our business.” 

Read Stowford Farm Meadows customer story (PDF 581KB)

Jan Keliris, VOCES8 Centre

“Our music charity, the VOCES8 Foundation, holds a lot of live events. When venues were forced to close in 2020, we decided to livestream our London choral festival. Our regular broadband wasn’t up to the task, so we asked BT for a high-speed internet connection with super strong wi-fi. Just four weeks later, we had a BTnet line! This meant we were able to broadcast ten  concerts and reach 40,000 households in 62 different countries around the world. Because of our newly reliable connection, I’m pleased to say the audience heard every note.”

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Creating closeness with Cornwall Hospice Care

It takes 1,000 volunteers and the work of 31 charity shops to keep Cornwall Hospice Care’s hospices running. And BTnet. Here’s how our dedicated line helps to bring patients and their families closer and make every charitable penny count.

What you'll get with a BTnet leased line

Dedicated line

BTnet is your connection. It’s a leased line, which means it’s dedicated to you. You don’t share it with anyone else. And that means you get speed and bandwidth you can rely on, all the time. No busy periods, no variable line quality, just a totally reliable and predictable service.

Huge capacity, symmetrical speeds, and unlimited data

Loads of people online at the same time? Go for it. It doesn’t matter what you’re doing: running VoIP phone systems, video calls, sending hefty files, or using lots of cloud-based applications. However data-hungry your business, BTnet can satisfy it.

Unlike Broadband connections, BTnet has matching upload and download speeds, up to 10Gbps. This is essential for uploading large files, use of cloud services, web hosting, video streaming, sharing large data files, internet VPN and if you’re using your connection for voice.

100% target availability SLA

We recognise the internet is critical to your business and so we offer a market-leading service availability. If we fail to meet our commitment to you, we provide money-back credits.

Download our Service Level Agreement (PDF, P68KB) for full details.

Fast fix times, 24/7

Expert UK-based support for your service and support needs. This includes billing, faults, technical and installation support.

Even with our 100% target availability, things can sometimes go wrong or you may need support. On the very rare occasion this happens, we aim to fix faults within five hours from whenever your report them (day, night, or weekend).

Wi-Fi, Guest Wi-Fi and simple LAN

BTnet is available with optional Cisco Meraki managed equipment to connect your systems to your leased line. Through just one neat piece of kit, which is unique to BT, you’ll get Wi-Fi for the office, advanced Guest Wi-Fi for your visitors and loads of LAN ports. After our engineer’s installed it for you, it’s a cinch to set up and use.

With the intuitive BTnet web portal, you can keep an eye on how you’re using the service. And because it’s online, you can do that from any device, anytime, anywhere you can get on the internet. Want to change something? Easy. Just tell us through the portal and our UK-based support team will sort it out for you. 

*These features are only available with our Cisco Meraki Managed equipment option. More information and specs available on request.

Change your speed

Many businesses have rushes and lulls throughout the year. With BTnet, it’s quick and easy to change your internet speed to keep it in sync with your business. When you hit a busy period, you can increase it. Then, when business calms down, you can save money by reducing the speed of your connection (we call this ‘flexing’).

Online usage reports

Allowing you to monitor your internet bandwidth utilisation. Available on request for services with our Cisco Managed equipment option.

If you select our Cisco Meraki managed equipment option you will get access to the new BTnet User Portal as standard, giving you monitoring of your service usage including bandwidth, applications and devices.

Installation work covered up to £2800

BTnet comes with free connection of the service as standard on three and five year contract terms. Sometimes, to deliver services like this there may be additional Excess Construction Charges (ECC) at your site to install the cabling and ducting. To help you, BT will fund up to £2800 of these charges, helping you avoid any nasty surprises for delivery. We can also give you an estimate of the ECC at the time of order so you know what to expect.

Fully managed service and equipment

BTnet comes with engineer installation and expert management of the service in-life. The equipment is managed and configured for you so you don’t need to worry about it at all. There is an option for a 'wires-only' service if you prefer to manage things yourself.

Ultra-low latency

Critical for applications such as financial trading, video and voice and cloud apps where every millisecond counts and lag can be a problem. Our Service Level Agreement includes guarantees around network latency so you can have faith in the service. This includes guarantees for UK network performance of <20ms (measured UK access node to access node). And because we publish our network performance, you can check on latency within the UK or even internationally.

Optional upgrades for leased lines

BTnet Security package

Face down cyber threats, help keep your business secure with integrated security. Our new Cisco Meraki equipment comes security-ready. With BTnet Security, there’s no upfront costs and no more equipment to find a home for, just a powerful security service for a fixed monthly charge. For that, you’ll get a firewall, content filtering, anti-malware protection, and intrusion detection and prevention. And because new cyber threats can appear any day, we keep you protected by continuously updating your service with regular security updates. 

And because we look after everything for you, you don’t need any specialist IT knowledge or IT resource. Because it uses the same support teams, contracts, and billing as BTnet, it’s remarkably easy to manage.

See the BTnet Security brochure for further information.

Quick Connect for shorter delivery lead times

BTnet Quick Connect means you don’t have to wait long to get your BTnet leased line.

We install a lower speed circuit in advance of setting up your main service, which you can use while we’re working on the main BTnet leased line. And then, once you’re up and running on the main circuit, BTnet Quick Connect takes over as a low-cost back-up service. If floods, fire, destructive roadworks, or other events disrupt your primary circuit, BTnet Quick Connect can help keep your business connected while we go all out to fix your primary circuit.

Ultimate resilience with a second circuit

We expect to keep you online, all the time. That’s why we give you a 100% target availability SLA. But sometimes things out of our control, like floods, fires, and destructive roadworks, can put a spanner in the works. Protect your connection with a second circuit and one of our resilience options: Failover, Backup, or Load balancing.

Two circuits with Failover resilience provides an active/passive service with full diverse routing at your site, and in our network (subject to survey). The secondary circuit remains inactive unless there is a failure on your primary circuit, in which case it provides the same circuit and speed for resilient service. We’ll set up and manage the failover for you as part of our managed service.

If you want a lower cost dual-circuit solution, we also have our Backup option. This is active/passive as well, but you can select a smaller, lower speed secondary circuit if you like. This includes some low cost delivery options. This means in the event of a failure on your primary circuit, you may have a more limited capacity on your backup circuit. This option also provides lower levels of site cabling/ducting diversity, but this might help you avoid some high Excess Construction Charges (ECC) in some cases.

Load balancing
For an active/active dual-circuit service with full site and network diversity we also have our Load balancing option. This provides two active circuits where you can balance the traffic across them. This involves a higher level of customer configuration.

Please see our BTnet Resilience Brochure for more information.

Make and take calls over your data network – and save money

BT’s business-grade voice services can help you save money by using your data network to handle all your calls as well. You no longer need separate phone lines. We offer quality of service that ensures calls are prioritised on your connection, so voice quality is not compromised.

You also get more flexibility than with traditional phone lines: you can market your business locally around the country, take your numbers with you if you move, and have your calls diverted to another site if there’s an emergency.

If you’re investing in a data network, SIP trunking voice services make that investment work harder for you.

More about BT Cloud Voice SIP

Dedicated internet access FAQs

How do you work out my quote?

Your quote is based on the following main factors  

 1. The bandwidth that you need
 2. The maximum bandwidth that you'll ever need
 3. Your distance from the BTnet exchange
 4. The length of your contract

What makes BTnet better than broadband?

Lots of things – including an internet connection you don’t share with anyone else, giving you guaranteed speeds with no usage limits. You get matching upload and download speeds too.

BTnet is also a super-reliable connection, and if we don’t hit our 100% availability target SLA, we give you money-back credits.

FAQs for leased line

What is a leased line?

A leased line is dedicated internet access for you and your business. Rather than sharing a broadband line you get a single line all to yourself. If you’re a business with high-powered broadband needs, a leased line boosts your bandwidth and reduces bottlenecks caused by crowded broadband lines.

What's the difference between a leased line and broadband?

Unlike our office broadband, BTnet leased line is an internet connection dedicated to one business, not shared with any others, which means it brings consistent and reliable connectivity all day, every day. It’s designed for businesses for whom a connection is not just valuable, but vital to their success.

What are the advantages of dedicated internet access?

·        Leased lines are internet connections for your use only, meaning greater reliability.

·        Our leased line connection speeds can go up to 10Gbps – that's even faster than our best Ultrafast broadband.

·        Unlike broadband, leased lines come with symmetric upload and download speeds, which is important for businesses uploading or sharing large files, using cloud services, web hosting, or if you’re using your connection for voice services, like VoIP.

BTnet is also a super-reliable connection, and if we don’t hit our 100% availability target SLA, we give you money-back credits.

How does a leased line work?

A leased line uses the same technology as our fibre-optic broadband, but rather than sharing the line with other users, a unique connection is ‘leased’ to your business alone, so all the bandwidth is dedicated to you.

Things you need to know

The legal stuff

Terms, conditions, and legal stuff for you to download.

Prices exclude VAT of 20%

* Free standard connection on BTnet is only available on a 3 or 5 year term contract, and is subject to survey.

BTnet Conditions and Service Schedule [PDF 412KB]

Annex to the Service Schedule for BTnet – BT Assure DoS [PDF 1.015MB]


Download all you need to know about BTnet

BTnet gave Epic Games the fast, reliable connection they needed

Learn how BTnet improved this camp site’s service

Getting better results from better connections

Connecting staff with parents and keeping students safe

See the service you’ll get with a BTnet leased line

Take extra measures to stay connected, no matter what

Cyber-attacks aren’t going away. Help protect your business with BTnet Security

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