SN POSTCODE AREA · 9 DISTRICTS SAMPLED
Swindon mobile coverage O2 leads at 100/100 SN postcode area
O2 has the best measured coverage in Swindon: 100/100, 8 points ahead of Three on Ofcom's overall score, with EE within 1 point.
Swindon as a whole
#1
O2
#2
EE
#3
Vodafone
#4
Three
Ofcom Mobile Coverage data (May 2025), measured across 979 addresses in 54 sampled postcodes, pooled from 9 districts. Methodology.
What differs inside Swindon
Where the networks split most
- SN6 Latton, Cricklade, Highworth: indoors O2 74%, Three 7%.
- SN7 Pusey, Buscot, Goosey: on 5G-grade outdoor signal EE, O2 and Vodafone 100%, Three 38%.
- SN4 Royal Wootton Bassett, Chiseldon, Wroughton: indoors O2 and Vodafone 100%, Three 89%.
Each network's weakest and strongest district
| Network | Indoor | 5G-grade outdoor |
|---|---|---|
| EE | 60% in SN6 Latton; 100% in 6 districts | within 8 points |
| O2 | 74% in SN6 Latton; 100% in 7 districts | within 8 points |
| Three | 7% in SN6 Latton; 100% in 5 districts | 38% in SN7 Pusey; 100% in 6 districts |
| Vodafone | 42% in SN6 Latton; 100% in 7 districts | within 8 points |
Middle of the area against its edges
The 2 districts nearest the middle (SN1 Swindon, SN3 Covingham) against the 2 furthest out (SN7 Pusey, SN8 Marlborough):
- Three on 5G-grade outdoor signal: 100% in the middle, 54% at the edges.
- Three indoors: 100% in the middle, 76% at the edges.
District by district
| District | Places | Indoor, low to high | 5G-grade outdoor, low to high | Addresses |
|---|---|---|---|---|
| SN1 | Swindon, Wroughton, Liden | 100% on all four | 100% on all four | 134 |
| SN2 | Swindon, Haydon Wick, Liden | 100% on all four | 100% on all four | 199 |
| SN3 | Covingham, South Marston, Liden | 100% on all four | 100% on all four | 89 |
| SN4 | Royal Wootton Bassett, Chiseldon, Wroughton | Three 89%; O2 and Vodafone 100% | 100% on all four | 63 |
| SN5 | Swindon, Purton, Cricklade | 100% on all four | 100% on all four | 91 |
| SN6 | Latton, Cricklade, Highworth | Three 7%; O2 74% | Three 78%; the rest 100% | 85 |
| SN7 | Pusey, Buscot, Goosey | Three 68%; the rest 100% | Three 38%; the rest 100% | 218 |
| SN8 | Marlborough, Pewsey Vale, Lambourn | 100% on all four | 100% on all four | 76 |
| SN9 | Pewsey, Oare, Alton | 100% on all four | 100% on all four | 24 small sample |
Marked small sample: under 30 addresses sampled. Listed, but left out of the comparisons above.
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