Welwyn mobile coverage Three 80% indoors here, 98% across St Albans AL6 · East Hertfordshire
No network wins AL6 on overall coverage: all four are within 3 points, but indoors EE, O2 and Vodafone reach 100% of sampled addresses and Three 80%.
AL6: Welwyn, Codicote, Wheathampstead, Tewin, Datchworth, Ayot St Peter, Woolmer Green, Ayot St Lawrence (East Hertfordshire, North Hertfordshire, St Albans).
AL6 scores
Ofcom Mobile Coverage data (May 2025), measured across 100 addresses in 6 sampled postcodes: AL6 0AP, AL6 0DS, AL6 0QR, AL6 9DQ, AL6 9FR, AL6 9LY. Methodology.
How AL6 compares
Against the St Albans average
- Three indoors: 80% here, 98% across St Albans (−18).
Weakest spot in St Albans: AL2 Shenley, where Vodafone reaches 71% indoors.
Lowest indoor figure of the 9 St Albans districts sampled, for Three.
Indoor signal around AL6
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| AL6 Welwyn (here) | – | 100% | 100% | 80% | 100% |
| AL8 Hatfield, Handside | 3 | 100% | 100% | 100% | 100% |
| AL7 Hatfield, Haldens | 4 | 100% | 100% | 100% | 100% |
| AL10 Hatfield, North Mymms | 8 | 100% | 100% | 100% | 100% |
| AL4 Marshalswick, Kimpton | 9 | 100% | 100% | 100% | 100% |
| St Albans average | – | 99% | 100% | 98% | 98% |
Biggest difference nearby: Three indoors, 80% here and 100% in AL8 Hatfield, 3 km away.
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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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