AL9 DISTRICT · EAST HERTFORDSHIRE
Hatfield mobile coverage EE 90% indoors here, 99% across St Albans AL9 · East Hertfordshire
No network wins AL9 on overall coverage: all four are within 2 points, but indoors O2 reaches 100% of sampled addresses and EE 90%.
AL9: Hatfield, Essendon, North Mymms, Little Berkhamsted, Little Heath, Welham Green, Brookmans Park, Hertford Rural (East Hertfordshire, Welwyn Hatfield).
AL9 scores
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Vodafone
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Ofcom Mobile Coverage data (May 2025), measured across 42 addresses in 6 sampled postcodes: AL9 5NH, AL9 6DL, AL9 7BB, AL9 7LD, AL9 7NH, AL9 7PE. Methodology.
How AL9 compares
Against the St Albans average
- EE indoors: 90% here, 99% across St Albans (−9).
Weakest spot in St Albans: AL2 Shenley, where Vodafone reaches 71% indoors.
Lowest indoor figure of the 9 St Albans districts sampled, for EE.
Indoor signal around AL9
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| AL9 Hatfield (here) | – | 90% | 100% | 98% | 98% |
| AL10 Hatfield, North Mymms | 3 | 100% | 100% | 100% | 100% |
| AL7 Hatfield, Haldens | 6 | 100% | 100% | 100% | 100% |
| AL8 Hatfield, Handside | 7 | 100% | 100% | 100% | 100% |
| AL4 Marshalswick, Kimpton | 7 | 100% | 100% | 100% | 100% |
| St Albans average | – | 99% | 100% | 98% | 98% |
Biggest difference nearby: EE indoors, 90% here and 100% in AL10 Hatfield, 3 km away.
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