BT Fibre Checker for Business: Check Your Availability

What does the BT fibre checker actually do?

The BT business availability checker, hosted at bt.com/business, looks up the Openreach infrastructure database using your postcode or full address. It returns the broadband technologies provisioned to your line, an estimated speed band, and whether full fibre to the premises has been built. It is a single-network lookup, not a market-wide search.

The checker typically returns three things:

• Whether ADSL, FTTC or FTTP is available at the address
• An estimated download and upload speed range for FTTC, based on your distance from the street cabinet
• Whether FTTP (full fibre) is live now or planned for your area

Openreach owns most of the UK's fixed-line access network, which is why this lookup covers so many premises. But the regulator Ofcom tracks several competing full-fibre networks that the BT checker does not see — and at many business addresses those altnets got there first.

How do you read the BT fibre checker results?

Each result maps to a different connectivity reality. ADSL means no fibre cabinet in range; FTTC means part-fibre, part-copper with speed tied to line length; FTTP means full fibre to the building. Reading the result correctly is the difference between ordering the right product and overpaying for the wrong one.

ADSL available

If the checker shows only ADSL, your premises is not within range of a fibre street cabinet. ADSL delivers up to around 20Mbps download and 2Mbps upload, which is now inadequate for most cloud-based business workloads. Treat ADSL as an interim or failover technology only. An ADSL-only result does not mean fibre will never arrive — Openreach cabinet and full-fibre upgrades continue across the country.

FTTC available

FTTC (fibre to the cabinet) runs fibre to the street cabinet and copper for the final stretch to your door, so speed depends on how far you sit from that cabinet. It is the most widely available fibre broadband technology in the UK. FTTC delivers between 40Mbps and 80Mbps download in most cases, with upload speeds of 8–20Mbps. The figure in the checker is an estimate, not a guarantee — real-world speed is confirmed when the line is tested at installation.

FTTP available

If the checker shows FTTP, full fibre has been built to your premises or building. FTTP delivers symmetric or near-symmetric speeds with far better reliability than FTTC because there is no copper in the path. Business FTTP products from BT Business typically start at 150Mbps and reach 900Mbps on the Openreach network. For most growing SMEs, FTTP is now the sensible default where it is available.

FTTP coming soon or not available

Where FTTP shows as planned, Openreach has committed to build to your area inside a stated window — but those timelines slip, so treat them as indicative. Full-fibre rollout is being accelerated nationally through the government's Project Gigabit programme. If you need full fibre now and Openreach is not ready, CityFibre or another altnet may already have built to your street.

Why is checking the BT fibre checker alone a mistake?

The BT checker only reports the Openreach network. It is blind to every independent fibre builder, which means a business that sees "FTTC only" can wrongly conclude full fibre is years away — when a gigabit altnet is already live at the same address. Single-network checking quietly limits your options and your leverage on price.

The BT fibre checker does not show:

• CityFibre coverage, which is independent of Openreach and live in many UK towns and cities
• Virgin Media Business coverage
• Independent altnet providers such as Hyperoptic, Community Fibre and Trooli
• Leased line availability from any carrier

A genuine availability picture comes from querying every network that serves your postcode at once, then comparing technology, speed, contention and price side by side. That is the gap between a quick BT lookup and a proper procurement decision.

How does AMVIA check availability differently?

AMVIA runs availability checks across multiple carrier databases at the same time — Openreach, CityFibre, Virgin Media Business and a range of independent network providers — and checks leased line availability in the same step. Instead of checking each network separately, you get one consolidated view of what is available at your address with pricing from each provider.

If you want full-fibre options compared against a dedicated connection, our business broadband and leased line pages set out where each one fits.

What should you do once you know what is available?

Knowing the technology is only half the job — the next step is matching it to how your business actually uses connectivity. Headcount, cloud dependency and tolerance for downtime decide whether shared fibre is enough or whether you need a dedicated, guaranteed line. Match the product to the requirement, not to the cheapest headline price.

A practical rule of thumb:

• 1–10 staff, general office workloads: FTTC or entry-tier FTTP is usually enough
• 10–30 staff or heavy cloud use: FTTP 300–500Mbps or bonded FTTC
• 30+ staff or mission-critical connectivity: FTTP 900Mbps or a dedicated internet access leased line

For businesses that depend on uptime — finance, professional services, anyone running voice and cloud apps over the same line — a full-fibre leased line with a guaranteed SLA is worth the premium. You can request a comparison through our leased line quote tool and see real prices across carriers.