# Most and fewest people in radon Affected Areas: places in South East (2022)

Adur, Brighton and Hove and Worthing had the joint highest share of people in radon Affected Areas of South East’s 64 councils in 2022, at 100%.

9 councils had the joint lowest, at 0%. The middle council, Epsom and Ewell, had 42%.

Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas.

| Rank | Area | People in radon Affected Area squares |
| --- | --- | --- |
| =1 | [Adur](https://openindex.co.uk/adur) | 100% |
| =1 | [Brighton and Hove](https://openindex.co.uk/brighton-and-hove) | 100% |
| =1 | [Worthing](https://openindex.co.uk/worthing) | 100% |
| 4 | [Gravesham](https://openindex.co.uk/gravesham) | 97% |
| 5 | [Arun](https://openindex.co.uk/arun) | 92% |
| 6 | [Dartford](https://openindex.co.uk/dartford) | 89% |
| 7 | [Dover](https://openindex.co.uk/dover) | 87% |
| =8 | [Cherwell](https://openindex.co.uk/cherwell) | 86% |
| =8 | [Lewes](https://openindex.co.uk/lewes) | 86% |
| =10 | [Eastbourne](https://openindex.co.uk/eastbourne) | 84% |
| =10 | [Medway](https://openindex.co.uk/medway) | 84% |
| =12 | [Basingstoke and Deane](https://openindex.co.uk/basingstoke-and-deane) | 83% |
| =12 | [Maidstone](https://openindex.co.uk/maidstone) | 83% |
| 14 | [West Oxfordshire](https://openindex.co.uk/west-oxfordshire) | 79% |
| 15 | [Sevenoaks](https://openindex.co.uk/sevenoaks) | 75% |
| 16 | [Folkestone and Hythe](https://openindex.co.uk/folkestone-and-hythe) | 74% |
| =17 | [Buckinghamshire](https://openindex.co.uk/buckinghamshire) | 71% |
| =17 | [Chichester](https://openindex.co.uk/chichester) | 71% |
| 19 | [Tandridge](https://openindex.co.uk/tandridge) | 70% |
| 20 | [Reigate and Banstead](https://openindex.co.uk/reigate-and-banstead) | 66% |
| 21 | [Reading](https://openindex.co.uk/reading) | 64% |
| =22 | [East Hampshire](https://openindex.co.uk/east-hampshire) | 63% |
| =22 | [Portsmouth](https://openindex.co.uk/portsmouth) | 63% |
| 24 | [Mole Valley](https://openindex.co.uk/mole-valley) | 62% |
| 25 | [Havant](https://openindex.co.uk/havant) | 56% |
| 26 | [Windsor and Maidenhead](https://openindex.co.uk/windsor-and-maidenhead) | 55% |
| 27 | [Ashford](https://openindex.co.uk/ashford) | 54% |
| 28 | [Tonbridge and Malling](https://openindex.co.uk/tonbridge-and-malling) | 53% |
| =29 | [Eastleigh](https://openindex.co.uk/eastleigh) | 46% |
| =29 | [Swale](https://openindex.co.uk/swale) | 46% |
| =29 | [West Berkshire](https://openindex.co.uk/west-berkshire) | 46% |
| =32 | [Epsom and Ewell](https://openindex.co.uk/epsom-and-ewell) | 42% |
| =32 | [Fareham](https://openindex.co.uk/fareham) | 42% |
| 34 | [Winchester](https://openindex.co.uk/winchester) | 38% |
| =35 | [Guildford](https://openindex.co.uk/guildford) | 37% |
| =35 | [South Oxfordshire](https://openindex.co.uk/south-oxfordshire) | 37% |
| 37 | [Milton Keynes](https://openindex.co.uk/milton-keynes) | 34% |
| 38 | [Canterbury](https://openindex.co.uk/canterbury) | 33% |
| 39 | [Waverley](https://openindex.co.uk/waverley) | 30% |
| 40 | [Oxford](https://openindex.co.uk/oxford) | 29% |
| 41 | [New Forest](https://openindex.co.uk/new-forest) | 28% |
| 42 | [Isle of Wight](https://openindex.co.uk/isle-of-wight) | 25% |
| 43 | [Vale of White Horse](https://openindex.co.uk/vale-of-white-horse) | 23% |
| 44 | [Rushmoor](https://openindex.co.uk/rushmoor) | 21% |
| 45 | [Test Valley](https://openindex.co.uk/test-valley) | 20% |
| =46 | [Gosport](https://openindex.co.uk/gosport) | 19% |
| =46 | [Southampton](https://openindex.co.uk/southampton) | 19% |
| 48 | [Horsham](https://openindex.co.uk/horsham) | 18% |
| 49 | [Hart](https://openindex.co.uk/hart) | 15% |
| 50 | [Wealden](https://openindex.co.uk/wealden) | 11% |
| =51 | [Slough](https://openindex.co.uk/slough) | 10% |
| =51 | [Wokingham](https://openindex.co.uk/wokingham) | 10% |
| =53 | [Crawley](https://openindex.co.uk/crawley) | 1% |
| =53 | [Mid Sussex](https://openindex.co.uk/mid-sussex) | 1% |
| =53 | [Thanet](https://openindex.co.uk/thanet) | 1% |
| =56 | [Bracknell Forest](https://openindex.co.uk/bracknell-forest) | 0% |
| =56 | [Elmbridge](https://openindex.co.uk/elmbridge) | 0% |
| =56 | [Hastings](https://openindex.co.uk/hastings) | 0% |
| =56 | [Rother](https://openindex.co.uk/rother) | 0% |
| =56 | [Runnymede](https://openindex.co.uk/runnymede) | 0% |
| =56 | [Spelthorne](https://openindex.co.uk/spelthorne) | 0% |
| =56 | [Surrey Heath](https://openindex.co.uk/surrey-heath) | 0% |
| =56 | [Tunbridge Wells](https://openindex.co.uk/tunbridge-wells) | 0% |
| =56 | [Woking](https://openindex.co.uk/woking) | 0% |

Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Period: 2022. Period: 2022.

## Other rankings of this measure

- [UK](https://openindex.co.uk/rankings/radon-affected-areas/uk)
- [England](https://openindex.co.uk/rankings/radon-affected-areas/england)
- [Northern Ireland](https://openindex.co.uk/rankings/radon-affected-areas/northern-ireland)
- [Scotland](https://openindex.co.uk/rankings/radon-affected-areas/scotland)
- [Wales](https://openindex.co.uk/rankings/radon-affected-areas/wales)
- [North East](https://openindex.co.uk/rankings/radon-affected-areas/north-east)
- [North West](https://openindex.co.uk/rankings/radon-affected-areas/north-west)
- [Yorkshire and The Humber](https://openindex.co.uk/rankings/radon-affected-areas/yorkshire-and-the-humber)
- [East Midlands](https://openindex.co.uk/rankings/radon-affected-areas/east-midlands)
- [West Midlands](https://openindex.co.uk/rankings/radon-affected-areas/west-midlands)
- [East of England](https://openindex.co.uk/rankings/radon-affected-areas/east-of-england)
- [London](https://openindex.co.uk/rankings/radon-affected-areas/london)
- [South West](https://openindex.co.uk/rankings/radon-affected-areas/south-west)

- [The map](https://openindex.co.uk/map/radon-affected-areas)
- [Source and method](https://openindex.co.uk/sources/radon-affected-areas)
- [The two measures side by side](https://openindex.co.uk/map/radon#vs=population&mode=blend)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/rankings/radon-affected-areas/south-east.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.11. The HTML page: https://openindex.co.uk/rankings/radon-affected-areas/south-east