UB9 DISTRICT · BUCKINGHAMSHIRE
Harefield mobile coverage EE 20% indoors here, 94% across Southall UB9 · Buckinghamshire
O2 has the best measured coverage in UB9: 100/100, 12 points ahead of EE on Ofcom's overall score, with Vodafone within 0 points.
UB9: Harefield, Denham, Gerrards Cross, Ruislip, Ickenham, Uxbridge, Maple Cross, Chorleywood South (Buckinghamshire, Hillingdon, Three Rivers).
UB9 scores
#1
O2
#2
Vodafone
#3
Three
#4
EE
Ofcom Mobile Coverage data (May 2025), measured across 96 addresses in 6 sampled postcodes: UB9 5BT, UB9 5FP, UB9 5JL, UB9 5NA, UB9 5NZ, UB9 6AU. Methodology.
How UB9 compares
Against the Southall average
- EE indoors: 20% here, 94% across Southall (−74).
Lowest indoor figure of the 10 Southall districts sampled, for EE and Three.
Indoor signal around UB9
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| UB9 Harefield (here) | – | 20% | 100% | 92% | 100% |
| UB10 Hillingdon, Colham | 5 | 100% | 100% | 100% | 100% |
| UB8 Denham, Colham | 6 | 100% | 100% | 100% | 100% |
| UB4 Belmore, Yeading | 9 | 100% | 100% | 100% | 100% |
| UB11 Uxbridge, Yiewsley small sample | 9 | 100% | 100% | 100% | 100% |
| Southall average | – | 94% | 100% | 99% | 100% |
Biggest difference nearby: EE indoors, 20% here and 100% in UB10 Hillingdon, 5 km away.
Small sample: under 30 addresses sampled.
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