Cilmery mobile coverage Three 100% indoors here, 89% across Llandrindod Wells LD4 · Powys
No network wins LD4 on overall coverage: all four are within 3 points, but indoors Three and Vodafone reach 100% of sampled addresses and EE 80%.
LD4: Cilmery, Treflys, Llangamarch, Llanwrtyd Wells, Llanafanfawr with Garth (Powys).
LD4 scores
Ofcom Mobile Coverage data (May 2025), measured across 66 addresses in 5 sampled postcodes: LD4 4AA, LD4 4BS, LD4 4BY, LD4 4EA, LD4 4EN. Methodology.
How LD4 compares
Against the Llandrindod Wells average
- Three indoors: 100% here, 89% across Llandrindod Wells (+11).
- EE indoors: 80% here, 89% across Llandrindod Wells (−9).
Weakest spot in Llandrindod Wells: LD7 Clun, where Vodafone reaches 10% indoors.
Indoor signal around LD4
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| LD4 Cilmery (here) | – | 80% | 88% | 100% | 100% |
| LD5 Llanwrtyd Wells, Treflys small sample | 5 | 100% | 100% | 92% | 100% |
| LD2 Builth, Bronllys | 11 | 100% | 100% | 100% | 100% |
| LD1 Llandrindod, Disserth | 21 | 95% | 100% | 80% | 100% |
| LD3 Brecon, Llywel | 22 | 100% | 100% | 100% | 100% |
| Llandrindod Wells average | – | 89% | 90% | 89% | 93% |
Biggest difference nearby: EE indoors, 80% here and 100% in LD2 Builth, 11 km away.
Small sample: under 30 addresses sampled.
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iD Mobile runs on Three's network: £6 a month for 15GB (read 19 October 2026). A price, not a coverage ranking: Ofcom separates no network here.
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