Harpenden mobile coverage Within 8 points of the St Albans average AL5 · Central Bedfordshire
No network wins AL5 on overall coverage: all four score 100/100.
AL5: Harpenden, Wheathampstead, Hyde, St Michael, Rural, Hill End, Redbourn, Sandridge (Central Bedfordshire, St Albans).
AL5 scores
Ofcom Mobile Coverage data (May 2025), measured across 140 addresses in 6 sampled postcodes: AL5 1FA, AL5 2SX, AL5 4EF, AL5 4SJ, AL5 4TL, AL5 5LE. Methodology.
How AL5 compares
Every network here is within 8 points of the St Albans average and of AL3 Harpenden, AL4 Marshalswick, AL1 Sopwell and AL8 Hatfield, indoors and outdoors.
Weakest spot in St Albans: AL2 Shenley, where Vodafone reaches 71% indoors.
Indoor signal around AL5
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| AL5 Harpenden (here) | – | 97% | 100% | 100% | 100% |
| AL3 Harpenden, Redbourn small sample | 4 | 92% | 83% | 92% | 92% |
| AL4 Marshalswick, Kimpton | 6 | 100% | 100% | 100% | 100% |
| AL1 Sopwell, Verulam | 8 | 100% | 100% | 100% | 100% |
| AL8 Hatfield, Handside | 10 | 100% | 100% | 100% | 100% |
| St Albans average | – | 99% | 100% | 98% | 98% |
Small sample: under 30 addresses sampled.
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1pMobile runs on EE's network: £5 a month for 5GB (read 19 October 2026). A price, not a coverage ranking: Ofcom separates no network here.
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