Quainton mobile coverage Vodafone 28% indoors here, 93% across Hemel Hempstead HP18 · Buckinghamshire
EE has the best measured coverage in HP18: 98/100, 10 points ahead of Vodafone on Ofcom's overall score, with Three within 0 points.
HP18: Quainton, Waddesdon, Long Crendon, Stoke Mandeville, Grendon Underwood, Brill, Upton, Dorton (Buckinghamshire, Cherwell, South Oxfordshire).
HP18 scores
Ofcom Mobile Coverage data (May 2025), measured across 46 addresses in 6 sampled postcodes: HP18 0DS, HP18 0HA, HP18 0HD, HP18 0HF, HP18 0HH, HP18 0HL. Methodology.
How HP18 compares
Against the Hemel Hempstead average
- Vodafone indoors: 28% here, 93% across Hemel Hempstead (−65).
- O2 indoors: 48% here, 92% across Hemel Hempstead (−44).
- O2 on 5G-grade outdoor signal: 89% here, 99% across Hemel Hempstead (−10).
Weakest spot in Hemel Hempstead: HP17 Haddenham, where O2 reaches 15% indoors.
Lowest indoor figure of the 20 Hemel Hempstead districts sampled, for Vodafone.
Lowest 5g-grade outdoor figure of the 20 Hemel Hempstead districts sampled, for O2.
Indoor signal around HP18
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| HP18 Quainton (here) | – | 89% | 48% | 89% | 28% |
| HP17 Haddenham, Upton | 7 | 74% | 15% | 80% | 59% |
| HP19 Aylesbury, Watermead | 10 | 100% | 100% | 100% | 100% |
| HP20 Aylesbury, Bierton | 11 | 100% | 100% | 100% | 100% |
| HP14 Ridgeway, Lane End | 21 | 91% | 45% | 73% | 46% |
| Hemel Hempstead average | – | 89% | 92% | 96% | 93% |
Biggest difference nearby: O2 indoors, 48% here and 15% in HP17 Haddenham, 7 km away.
Compare plans
1pMobile runs on EE's network: £5 a month for 5GB (read 19 October 2026). A price, not a coverage ranking: EE leads this page on Ofcom's data alone.
1pMobile plans →Some links on this page are affiliate links. How we rank.