UKAbout
A reference for UK broadcast transmitters, built entirely from published data: every television, FM, DAB and medium-wave transmitter Ofcom list, one page per mast. The source files list television and radio separately, so a single page per mast is a join Ofcom themselves do not publish.
2,193 masts, between them carrying 3,831 television multiplex transmissions, 2,095 FM services, 1,385 DAB ensembles with 24,286 station listings, and 95 medium-wave services. 265 channels, 1,358 radio stations, 175 DAB ensembles and 30 television regions have a page.
Ways in
Freeview channels — which multiplex carries a channel, and therefore what else disappears with it. Radio stations — every transmitter carrying a station across FM, DAB and medium wave, which is a join Ofcom's three files do not publish. DAB ensembles — the full station line-up of each one. Television regions — why the next village gets different news.
Why it exists
ukfree.tv, which was the go-to UK resource for transmitter data and postcode reception lookup, went offline during 2025. Nothing replaced the combination it offered. The underlying data is public and free; this site rebuilds the useful parts of it from that data.
The one editorial rule
Every claim carries an evidence class, and a claim is never promoted to a higher one without new evidence:
- [V]
- Verified — checked against a primary source or a measurement.
- [D]
- Documented — stated by a cited authority.
- [I]
- Inferred — derived by us from cited data.
- [A]
- Assumed — our judgement, and nobody's published position.
This sounds like bureaucracy and is not. A number can travel a long way on nothing more than several sites agreeing with each other, and agreement between people copying one another is not evidence. One figure on this project — the signal-to-noise ratio DVB-T2 needs — was carried as verified for exactly that reason and turned out to be wrong, in the direction that flattered our own argument. The classes exist so that the next one is caught.
What makes it different
Reception predictions here are modelled, and every page says so next to the number — along with how far the model has been checked and where it is known to be wrong. See the method.
More detail
Plenty of sites will confidently tell you the wrong transmitter serves your postcode; the useful thing is not another confident answer but a stated one. The radio side here is also better than the television side — not a choice, the data: Ofcom publish radiation patterns and RDS identifiers for radio and almost nothing equivalent for television, so FM and DAB predictions are directional where television's are not.