How Much Does a BT Leased Line Cost? AMVIA Price Guide
BT leased lines are priced above the UK market average. A 100Mbps BT Dedicated Internet Access circuit typically costs £400–£700 per month, compared to £199–£450 from competing carriers in the same locations. This guide examines BT's pricing in detail and explains where the market offers better value.
Matt Cannon
Managing Director
BT is one of the most recognised leased line providers in the UK, but recognition does not equal best value. Understanding what BT actually charges for leased lines — and comparing that against the broader market — is an exercise that most businesses going through a leased line procurement should complete before signing any contract.
BT Leased Line Pricing in 2025–26
BT offers leased lines primarily through its BT Business division under the Dedicated Internet Access (DIA) product family. Indicative prices on 36-month contracts:
- 100Mbps DIA: £400–£700/month (location-dependent)
- 200Mbps DIA: £500–£900/month
- 500Mbps DIA: £600–£1,000/month
- 1Gbps DIA: £700–£1,200/month
These figures are for standard Openreach-delivered circuits on a 36-month term. Prices are higher for shorter contracts and may include installation charges on top.
How BT Leased Line Prices Compare to the Market
The UK leased line market has multiple competitive carriers. For most commercial premises, comparable circuits from other providers cost materially less:
- 100Mbps leased line (market range): £199–£450/month
- 1Gbps leased line (market range): £400–£750/month
The differential is consistent. BT's leased line prices sit at the upper end of the market in most locations. A business that defaults to BT without running a comparison is likely overpaying by 20–40% compared to what competing carriers would charge for the same service level.
Why Does BT Charge More?
BT's premium pricing reflects several factors:
- Brand premium: Many businesses default to BT and never compare alternatives. This reduces price pressure on BT.
- Network size: BT's argument is that the scale and geographic reach of the Openreach network is unmatched. This is true for coverage, but competing carriers serve the vast majority of commercial premises effectively.
- Direct relationship: Some businesses value having a single direct relationship with an infrastructure provider rather than a reseller model.
- Inertia: Many leased line contracts auto-renew. Customers who do not actively renegotiate at renewal remain on existing (elevated) pricing.
What BT Does Include
BT's leased line products include the standard features expected of a business-grade dedicated circuit:
- 100% committed information rate (CIR) — full bandwidth guaranteed
- Four-hour P1 fault response SLA
- Eight-hour mean time to repair (MTTR) for P1 faults
- 99.95% availability target
- Static IP addresses
- 24/7 network monitoring
- CPE router (usually rented or optionally purchased)
Competing carriers typically offer identical or comparable SLA terms at lower monthly cost.
When Might BT Still Be the Right Choice?
There are circumstances where BT makes sense despite higher pricing:
- Your premises is in a remote location where Openreach is the only viable carrier
- You are consolidating multiple services under BT Business and the overall package represents better value
- You have a complex multi-site requirement that BT can address more simply than multiple carriers
- An existing relationship includes negotiated pricing that closes the gap with the market
The Value of Running a Comparison
AMVIA's experience across hundreds of leased line procurements is that running a proper multi-carrier comparison almost always returns pricing below BT's standard rates — typically 20–35% lower in competitive urban locations. The comparison process costs nothing and takes less time than the BT procurement process alone. It is the single most effective action a business can take before committing to a leased line contract.
Is BT Offering You a Competitive Leased Line Price?
There is only one way to know — run a comparison. AMVIA checks multiple carriers for your postcode and returns pricing within one business day.
Frequently Asked Questions
BT consistently prices at the top of the market for leased lines. In competitive urban locations, comparable circuits from other carriers typically cost 20–40% less. In more remote locations with fewer carrier options, the gap may be smaller. <strong>100 Mbps leased line</strong>: £240–£320/month (36-month term) in urban areas; up to £390/month in semi-rural areas. <em>(AMVIA)</em>
No. BT's leased line SLAs — four-hour P1 response, eight-hour MTTR — are standard across the market. Competing carriers offer identical or comparable SLA terms. The SLA is not a distinguishing argument for choosing BT over alternatives.
Yes, to a degree. BT Business account managers have some flexibility on pricing, particularly for longer contracts or businesses taking multiple services. However, independent market comparison typically delivers larger savings than BT's negotiated discounts alone.
BT delivers leased lines primarily over the BT Openreach network, which is the UK's largest infrastructure. However, the same infrastructure is used by many competing leased line providers. The difference between buying from BT directly and buying from a carrier that uses Openreach is the commercial terms, not the physical circuit.
BT leased line contracts typically require 90 days' written notice before the contract end date to avoid automatic renewal or early termination charges. Failing to give notice can result in being locked in for another full contract period. Diarise your contract end date and set a reminder for 90+ days in advance. <strong>500 Mbps leased line</strong>: £411–£673/month (36-month term) — only ~58% more expensive than 100 Mbps despite 5× the speed. <em>(AMVIA)</em>
Related Reading
BT Leased Line Guide: Costs, SLAs & Alternatives
A comprehensive guide to BT's leased line products, SLAs and why alternatives deserve consideration.
100Mbps Leased Line: Costs, Speeds & Providers Explained
What a 100Mbps leased line costs across the UK market, with typical ranges by location.
1Gbps Leased Line Costs in the UK
Gigabit leased line pricing across the UK market — what drives costs and how to find the best deal.