BT Leased Line vs the Alternatives: Is BT Worth the Premium?
BT is the default choice for UK leased lines — and often the most expensive one. A balanced look at when BT direct earns its premium, when Virgin Media Business or CityFibre routes beat it, and how to find out which applies to your postcode.
Key Facts
Quick answer
BT leased lines have commonly been priced at £200–£600/month for 100Mbps–1Gbps direct, while the same speeds start from £69/month (100Mbps) and £129/month (1Gbps) via Virgin Media Business and alt-net routes like CityFibre where they serve your postcode. BT still wins on coverage — especially rural and multi-site — but in well-served areas, businesses comparing the market instead of renewing with BT by default typically save 15–35%.
BT Direct vs the Main Alternatives
| Feature | BT (direct)£200–£600/mo typical | Virgin Media Businessfrom £69/mo (100Mbps) | CityFibre routes (via partners)1Gbps from £129/mo |
|---|---|---|---|
| Underlying network | Openreach | Virgin's own cable + fibre | CityFibre wholesale full fibre |
| Coverage | Widest in the UK, incl. rural | Urban and suburban strongholds | Expanding city footprints |
| Published 100Mbps–1Gbps pricing seen in the market | £200–£600/mo | £69 (100Mbps) / £129 (1Gbps) from | 1Gbps from £129/mo |
| Uptime SLA | 99.95%–99.99% | 99.95%–99.99% | 99.95%–99.99% |
| Install lead time | 30–90 working days | 30–90 working days | 30–90 working days |
| Buy direct? | Via partners only | ||
| Multi-site / rural reach | Where on-net | City footprints only |
When Each Option Wins
Stay with (or choose) BT if...
Your site sits outside Virgin and alt-net footprints, you're consolidating many locations onto one carrier, or procurement requires a single national provider. BT's coverage is the genuine article — the question is whether your postcode needs it.
Choose an alternative if...
Virgin Media Business or a CityFibre partner route serves your postcode. Like-for-like circuits start from £69/month (100Mbps) and £129/month (1Gbps) on these routes — and the SLA structures are comparable to BT's. In our comparison experience, the typical saving over a default BT renewal is 15–35%.
The cost of renewing by default
The expensive mistake isn't choosing BT — it's renewing with BT without checking the market. If a CityFibre or Virgin route now reaches your building (footprints have expanded every year), a like-for-like 1Gbps circuit from £129/month against a £400–£600 BT renewal is £3,000–£5,600 a year back, for the same SLA class. A postcode check costs nothing and takes 24 hours.
Check my postcodeThe AMVIA Recommendation
The AMVIA Recommendation
Never renew a BT leased line without a market check — and never dismiss BT where coverage is the constraint. AMVIA is network-agnostic: we quote BT Openreach routes alongside Virgin Media Business, CityFibre and Zayo for your exact address, so the comparison is real, not theoretical. If BT wins for your site, you'll know it's on merit.
Get a like-for-like comparisonBT is where most UK businesses start — and stop — when they buy a leased line. Sometimes that's the right call; often it's an expensive default. This comparison lays out where BT direct genuinely earns its premium, where the alternatives beat it, and how to tell which situation your postcode is in. For the wider market picture, see our full UK provider comparison.
What BT actually sells (and what it costs)
BT sells dedicated circuits over Openreach, the access network its group owns — the widest in the UK, passing 20m+ premises with full fibre by September 2025. That coverage is the product: for rural sites and multi-site estates wanting one national carrier, BT is frequently the only realistic bidder. Direct pricing for 100Mbps–1Gbps circuits has commonly sat at £200–£600 per month — a premium that makes sense where no one else reaches, and much less sense at a city postcode served by three networks.
The alternatives, honestly stated
Virgin Media Business runs its own national cable-and-fibre network and prices aggressively on it: from £69/month for 100Mbps and £129/month for 1Gbps where on-net. CityFibre is wholesale-only — you buy it via partners — and its expanding city footprints carry some of the sharpest 1Gbps pricing in the market, from £129/month. Vodafone and TalkTalk Business resell over Openreach and CityFibre, often undercutting BT direct on the very same physical network. SLA structures across all of these are comparable to BT's: 99.95%–99.99% uptime with defined repair terms.
Two honest caveats. First, coverage: none of the alternatives matches Openreach's reach, so at plenty of UK postcodes the comparison is BT versus nothing. Second, brand isn't circuit quality — but neither is it a guarantee. Compare mean time to repair and service credits, not logos.
The renewal trap
The most expensive leased line decision in the UK is the unexamined BT renewal. Alt-net and Virgin footprints expand every year, so an address with no alternative at your last renewal may have two now — at half the price for the same SLA class. A like-for-like 1Gbps comparison takes 24 hours and costs nothing; against a £400–£600 BT renewal, a £129–£200 alternative route returns £3,000–£5,600 a year. In our comparison experience, businesses that check the market instead of auto-renewing typically save 15–35% — and when BT still wins, they renew knowing it's on merit.
How to run the comparison properly
- Check every network for your exact postcode — footprints are street-level, not city-level. Start with a multi-carrier quote.
- Compare repair terms, not just uptime percentages — 99.99% with a 5-hour fix and 99.99% with a 24-hour fix are different products.
- Get construction charges in writing before you sign, whoever you buy from.
- Sequence the migration — new circuit installed and tested before the BT cease, so switching means a planned cutover, not downtime. See our installation timeline guide.
- Treat the circuit as part of your security perimeter — whoever wins, factor in leased line security.
Frequently Asked Questions
BT direct pricing for 100Mbps–1Gbps leased lines has commonly sat in the £200–£600 per month range, depending on speed, location and contract term. The same speeds start from £69/month (100Mbps) and £129/month (1Gbps) via Virgin Media Business and alt-net routes where they serve your postcode — which is why a market comparison before any BT renewal is worth 24 hours of your time.
Not inherently. Uptime SLAs across BT, Virgin Media Business and alt-net business circuits are comparable — typically 99.95%–99.99% with defined repair times. The meaningful differences are coverage (BT's is widest), install lead time at your specific address, and price. Compare the repair commitment and service credits rather than assuming the bigger brand means a better circuit.
When coverage is the constraint: rural sites, multi-site estates that want one national carrier, or postcodes where neither Virgin nor an alt-net has fibre. BT's Openreach reach is real and worth paying for in those cases. The mistake is paying the coverage premium at a city-centre postcode that three networks already serve.
Sometimes. Openreach-delivered circuits are sold by many resellers, not just BT — the same underlying network can carry different retail prices. A market comparison will often surface an Openreach route via a reseller at a sharper price than a BT direct renewal, alongside any Virgin or alt-net options for your address.
A new circuit is installed and tested before your old one is ceased, so a well-managed migration involves a planned cutover rather than downtime. Allow 30–90 working days for the new line's installation and coordinate the BT cease date to follow it. AMVIA manages that sequencing — survey, install, cutover, cease — as standard.
Footprints change every year — Virgin Media Business and CityFibre have both expanded significantly, and an address that had no alternative at your last renewal may have two now. The only reliable answer is a live availability check for your exact postcode, which is free and typically returns within 24 hours.
Compare BT Against the Market for Your Postcode
AMVIA quotes BT Openreach routes alongside Virgin Media Business, CityFibre and Zayo for your exact address — a real like-for-like comparison, typically within 24 hours. No obligation.
Related Resources
UK Leased Line Providers Compared
The full market map: BT, Virgin, CityFibre, Vodafone, TalkTalk, Colt and Zayo.
1Gbps Leased Line Costs
Gigabit dedicated fibre from £129/month — regional pricing and cost drivers.
How Much Does a Leased Line Cost in the UK?
The full cost breakdown across every speed tier, install charges and contract terms.
Business Leased Lines
The full AMVIA leased line hub — costs, providers, SLAs and security.
Get a Leased Line Quote
Multi-carrier price comparison for your exact address, typically within 24 hours.
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