BT Leased Line Guide: Costs, SLAs & Alternatives
BT offers leased lines to UK businesses through its Ethernet and Dedicated Internet Access products, but its pricing is consistently above the market average. This guide covers what BT leased lines cost, what SLAs to expect, and why comparing alternatives almost always returns a better deal.
Matt Cannon
Managing Director
When businesses think about a dedicated internet connection, BT is often the first name that comes up. With the widest UK network coverage and a familiar brand, BT has a natural advantage in visibility. But visibility and value are different things — and in the leased line market, BT is rarely the most cost-effective provider for the majority of UK business premises.
BT Leased Line Products
BT offers leased lines under several product names, primarily:
- BT Ethernet Connect: A point-to-point Ethernet service, typically used for site-to-site connectivity
- BT Dedicated Internet Access (DIA): A dedicated, symmetric internet circuit with guaranteed bandwidth — the product most businesses are looking for when they ask about a leased line
- BT Ethernet Broadband (EAD): Openreach Ethernet in the First Mile, a stepped-down product that delivers Ethernet over existing copper infrastructure at lower cost but with some performance trade-offs
For a standard dedicated internet access leased line, BT's pricing sits at the premium end of the market.
BT Leased Line Costs
Indicative pricing for BT Dedicated Internet Access on 36-month contracts:
- 100Mbps DIA: approximately £400–£700/month depending on location
- 200Mbps DIA: approximately £500–£900/month
- 1Gbps DIA: approximately £700–£1,200/month
These figures are consistently 20–40% higher than equivalent products from competing carriers in the same locations. BT can offer this pricing partly because of brand recognition and partly because many smaller businesses do not run a proper RFQ process before buying.
Installation charges for BT leased lines typically range from £0 on promotional deals to £1,500 or more where civil works are required.
BT Leased Line SLAs
BT's leased line SLAs are broadly in line with the industry standard:
- Fault response: Four hours for P1 priority faults
- Mean time to repair (MTTR): Eight hours for P1 faults
- Availability target: 99.95% (approximately 4.4 hours downtime per year)
- Service credits: Financial compensation if SLA targets are missed
These SLA terms are comparable to what competing carriers offer at considerably lower monthly cost. The SLA argument for choosing BT over an alternative is therefore not particularly strong. What BT can offer is a direct relationship with the underlying Openreach infrastructure where the network is Openreach-based — though this applies to many competitors' circuits too.
Installation Lead Times
BT leased line installation lead times are comparable to the industry average of 60–90 working days. In some cases, BT's order management is slower than specialist leased line providers who manage installation more actively. Businesses with a firm go-live date should ensure that date is clearly documented in the order and check on progress regularly.
Why You Should Compare Alternatives
The UK leased line market has multiple competitive carriers. For most business premises in the UK, it is possible to source an equivalent or superior leased line from Zayo, Colt, GTT, Vodafone Business, TalkTalk Business, or a range of regional independent providers at a meaningfully lower price than BT. In some locations, Virgin Media Business or CityFibre-based providers have infrastructure advantages that translate to faster installation or better pricing.
The key principle is this: leased line pricing is location-dependent. The carrier with infrastructure nearest to your building will almost always offer the most competitive price. Running a multi-carrier availability check and obtaining parallel quotes is the only reliable way to find the best deal for your specific address.
When BT Leased Lines Make Sense
There are scenarios where BT may be the right choice despite higher pricing:
- Your business has an existing relationship with BT Business and consolidating services provides genuine administrative value
- Your location has limited carrier coverage and BT Openreach is the only viable option
- You require a specific Openreach product (such as EAD) that is not available through competing resellers
- You require multi-site services that BT can deliver more efficiently as a single provider
How AMVIA Can Help
AMVIA runs leased line availability checks and pricing comparisons across BT and competing carriers simultaneously. In the majority of cases, we identify options that save businesses 15–35% on leased line costs compared to going direct to BT. We manage the full procurement and installation process, so you are not navigating BT's order management processes yourself.
Is BT Offering You a Competitive Leased Line Price?
Run a free comparison across multiple carriers for your postcode and find out whether you can get the same or better performance for less.
Frequently Asked Questions
BT Dedicated Internet Access is consistently priced above the market average. In competitive urban locations, comparable circuits from other carriers typically cost 20–40% less. In areas where BT has fewer competitors, the gap may be smaller. Always obtain competitive quotes before deciding. <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>
Yes. Many leased line providers use Openreach infrastructure for the last mile of their circuits — particularly outside major cities. Buying from an alternative provider does not necessarily mean using a different physical network. What you are comparing is the commercial terms, account management and end-to-end service quality.
BT Ethernet in the First Mile (EAD) is an Ethernet service delivered over existing copper infrastructure rather than fibre. It delivers lower maximum speeds (typically up to 35Mbps) but is available at lower cost and faster installation lead times. It is not equivalent to a full fibre leased line and suits lower bandwidth requirements.
Yes, to a degree. BT Business account managers have some flexibility on pricing, particularly for multi-year contracts or customers taking multiple services. However, independent comparison typically produces larger savings than negotiation alone, because it introduces genuine competition into the conversation.
At the end of the contract term, the circuit typically reverts to an out-of-contract rate which may be higher than your original price. BT should provide notice before the contract ends. Use this as an opportunity to run a fresh comparison — the market moves quickly and better options may have emerged since your last renewal.
AMVIA has been helping UK businesses source and manage connectivity for many years. As a managed IT provider serving SMEs across the UK, we handle the complete lifecycle from initial comparison through installation, ongoing management and renewal, on behalf of our clients.
Related Reading
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1Gbps Leased Line Costs in the UK
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How Much Does a BT Leased Line Cost?
A focused breakdown of BT leased line pricing and where you can consistently find better value.