Across Britain, networks have laid full fibre past millions of homes that haven't taken it. Here's where the coverage, the conversion gaps and the operators sit — mapped from regulator data across 41.6 million premises. Built for network operators and investors.
* Unconverted full-fibre premises × ~£30/mo ARPU — the theoretical conversion ceiling across all networks, not a forecast.
Every UK local authority, shaded by the metric you choose. Click any point to open it; filter by region. Macro today — the same engine drills down to city, postcode and street.
Type a postcode, postcode area, or town/authority — see its full-fibre coverage, take-up and the unconverted opportunity.
Every UK local authority. Switch the lens: biggest conversion opportunity, largest market by premises, or thinnest fibre coverage.
| Local authority | Region | Premises | Fibre avail | Take-up | Unconverted |
|---|
| Region | Premises | Unconverted |
|---|
Where full fibre is widely available but take-up stays low — the conversion battleground. Not where to dig: where to win customers on networks that already exist. (Click a row to open it on the map.)
| Local authority | Region | Fibre available | Take-up | Unconverted |
|---|
BDUK Project Gigabit subsidy (England & Wales): the local authorities where state-funded fibre build is concentrated, and the supplier holding the contract. Click a row to open it on the map.
| Local authority | Region | Subsidised | Funded supplier | Already gigabit | No plan |
|---|
New-build home sales (HM Land Registry, last 2 years) by authority — the forward build target: where tomorrow's premises are appearing. Pair it with "Build gap" to find new estates with no gigabit plan yet. England & Wales; click a row to open it.
| Local authority | Region | New-build sales (2y) | Planned (brownfield) | No gigabit plan |
|---|
The largest UK networks by premises passed and where they build — not exhaustive (~100 altnets exist). Coverage areas are public build footprints, not a per-area premises split.
| Network | Premises | Coverage area | Status | Accounts to |
|---|
One fused view, normalised on the UPRN / postcode / local-authority key, from open data.
| Coverage · take-up | Ofcom Connected Nations 2025 (Jul 2025) |
| Premises (41.6M) | OS Open UPRN |
| Postcodes · geography | ONS NSPL Nov 2025 · OS Code-Point |
| Overbuild · subsidy · supplier | BDUK Project Gigabit, May 2025 OMR (30.9M premises) |
| New-build sales | HM Land Registry Price Paid 2024–25 |
| Planned homes | planning.data.gov.uk brownfield-land |
| Deprivation | English IMD 2019 |
| Corporate status | Companies House (Jun 2026) |
| Boundaries · demographics | ONS LAD 2024 · Census 2021 |