Residents in a radon Affected Area, every council ranked
Where UKHSA expects 1% or more of the homes in a 1km square to be above the radon action level. Only a test tells a home's own level. Figures for December 2022, published for 361 councils in the UK. Lowest first: the order says where a council sits, not whether that is good.
Joint lowest: 45 councils, 0%. The council in the middle: Stevenage, 42.7%. Joint highest: 9 councils, 100%.
| Place | Council | Figure |
|---|---|---|
| 1 joint | BarnetLondon | 0% |
| 1 joint | BasildonEast of England | 0% |
| 1 joint | BlackpoolNorth West | 0% |
| 1 joint | BostonEast Midlands | 0% |
| 1 joint | Bracknell ForestSouth East | 0% |
| 1 joint | BraintreeEast of England | 0% |
| 1 joint | BrentLondon | 0% |
| 1 joint | BrentwoodEast of England | 0% |
| 1 joint | CambridgeEast of England | 0% |
| 1 joint | Castle PointEast of England | 0% |
| 1 joint | ChelmsfordEast of England | 0% |
| 1 joint | City of LondonLondon | 0% |
| 1 joint | EalingLondon | 0% |
| 1 joint | ElmbridgeSouth East | 0% |
| 1 joint | EnfieldLondon | 0% |
| 1 joint | FyldeNorth West | 0% |
| 1 joint | Great YarmouthEast of England | 0% |
| 1 joint | Hammersmith and FulhamLondon | 0% |
| 1 joint | HaringeyLondon | 0% |
| 1 joint | HarrowLondon | 0% |
| 1 joint | HastingsSouth East | 0% |
| 1 joint | HounslowLondon | 0% |
| 1 joint | Kensington and ChelseaLondon | 0% |
| 1 joint | Kingston upon HullYorkshire and the Humber | 0% |
| 1 joint | Kingston upon ThamesLondon | 0% |
| 1 joint | LambethLondon | 0% |
| 1 joint | MaldonEast of England | 0% |
| 1 joint | MertonLondon | 0% |
| 1 joint | NorwichEast of England | 0% |
| 1 joint | Richmond upon ThamesLondon | 0% |
| 1 joint | RochfordEast of England | 0% |
| 1 joint | RotherSouth East | 0% |
| 1 joint | RunnymedeSouth East | 0% |
| 1 joint | SeftonNorth West | 0% |
| 1 joint | South HollandEast Midlands | 0% |
| 1 joint | Southend-on-SeaEast of England | 0% |
| 1 joint | SpelthorneSouth East | 0% |
| 1 joint | Surrey HeathSouth East | 0% |
| 1 joint | TraffordNorth West | 0% |
| 1 joint | Tunbridge WellsSouth East | 0% |
| 1 joint | WandsworthLondon | 0% |
| 1 joint | WestminsterLondon | 0% |
| 1 joint | WirralNorth West | 0% |
| 1 joint | WokingSouth East | 0% |
| 1 joint | YorkYorkshire and the Humber | 0% |
| 46 | ColchesterEast of England | 0.2% |
| 47 joint | IslingtonLondon | 0.5% |
| 47 joint | North East LincolnshireYorkshire and the Humber | 0.5% |
| 49 | CrawleySouth East | 0.6% |
| 50 | Mid SussexSouth East | 0.9% |
| 51 | RedditchWest Midlands | 1.1% |
| 52 | HaveringLondon | 1.2% |
| 53 | ThanetSouth East | 1.3% |
| 54 | Stockton-on-TeesNorth East | 1.5% |
| 55 joint | North NorfolkEast of England | 2.1% |
| 55 joint | South RibbleNorth West | 2.1% |
| 57 joint | FenlandEast of England | 2.3% |
| 57 joint | North LanarkshireScotland | 2.3% |
| 57 joint | WyreNorth West | 2.3% |
| 60 | Epping ForestEast of England | 2.4% |
| 61 | TendringEast of England | 2.6% |
| 62 | Na h-Eileanan SiarScotland | 2.7% |
| 63 | Bournemouth, Christchurch and PooleSouth West | 2.8% |
| 64 joint | HackneyLondon | 3% |
| 64 joint | South NorfolkEast of England | 3% |
| 66 | Glasgow CityScotland | 3.1% |
| 67 | LiverpoolNorth West | 3.2% |
| 68 | Barking and DagenhamLondon | 3.3% |
| 69 | HarlowEast of England | 3.4% |
| 70 | Tower HamletsLondon | 3.5% |
| 71 | SolihullWest Midlands | 4.1% |
| 72 | PrestonNorth West | 4.4% |
| 73 | PeterboroughEast of England | 4.6% |
| 74 | MiddlesbroughNorth East | 5% |
| 75 | LichfieldWest Midlands | 5.2% |
| 76 | RedbridgeLondon | 5.3% |
| 77 | BedfordEast of England | 5.5% |
| 78 | South CambridgeshireEast of England | 5.7% |
| 79 | WorcesterWest Midlands | 6.2% |
| 80 joint | Central BedfordshireEast of England | 6.4% |
| 80 joint | Cheshire EastNorth West | 6.4% |
| 82 | BroadlandEast of England | 6.5% |
| 83 | CamdenLondon | 6.8% |
| 84 | HillingdonLondon | 7.4% |
| 85 | FalkirkScotland | 7.6% |
| 86 | Newcastle upon TyneNorth East | 7.7% |
| 87 | South LanarkshireScotland | 8.2% |
| 88 | Cheshire West and ChesterNorth West | 8.7% |
| 89 | South AyrshireScotland | 9% |
| 90 joint | Newark and SherwoodEast Midlands | 9.5% |
| 90 joint | WarringtonNorth West | 9.5% |
| 92 | DarlingtonNorth East | 10.2% |
| 93 | WokinghamSouth East | 10.4% |
| 94 | GloucesterSouth West | 10.6% |
| 95 joint | SloughSouth East | 11.3% |
| 95 joint | SwindonSouth West | 11.3% |
| 97 | East CambridgeshireEast of England | 11.9% |
| 98 | WealdenSouth East | 12.5% |
| 99 | BelfastNorthern Ireland | 12.7% |
| 100 | ManchesterNorth West | 12.9% |
| 101 | City of EdinburghScotland | 13.5% |
| 102 | Antrim and NewtownabbeyNorthern Ireland | 13.6% |
| 103 | BrecklandEast of England | 13.8% |
| 104 | Hinckley and BosworthEast Midlands | 13.9% |
| 105 | East RenfrewshireScotland | 14.3% |
| 106 | FifeScotland | 14.5% |
| 107 joint | InverclydeScotland | 14.8% |
| 107 joint | Mid SuffolkEast of England | 14.8% |
| 109 | East Riding of YorkshireYorkshire and the Humber | 15.4% |
| 110 | West LothianScotland | 15.6% |
| 111 joint | HartSouth East | 15.7% |
| 111 joint | South DerbyshireEast Midlands | 15.7% |
| 113 | West SuffolkEast of England | 16% |
| 114 | UttlesfordEast of England | 16.4% |
| 115 joint | East StaffordshireWest Midlands | 17.2% |
| 115 joint | SouthamptonSouth East | 17.2% |
| 117 | StockportNorth West | 17.3% |
| 118 | East AyrshireScotland | 17.5% |
| 119 joint | BirminghamWest Midlands | 17.9% |
| 119 joint | StaffordWest Midlands | 17.9% |
| 121 | GosportSouth East | 18.3% |
| 122 | Cannock ChaseWest Midlands | 18.6% |
| 123 | HorshamSouth East | 19% |
| 124 | RushmoorSouth East | 19.8% |
| 125 | ClackmannanshireScotland | 20.5% |
| 126 | BroxbourneEast of England | 20.6% |
| 127 | RugbyWest Midlands | 21.6% |
| 128 | StirlingScotland | 22% |
| 129 | East DunbartonshireScotland | 22.3% |
| 130 | North AyrshireScotland | 22.5% |
| 131 | HertsmereEast of England | 22.9% |
| 132 | CharnwoodEast Midlands | 23.2% |
| 133 | Vale of White HorseSouth East | 23.4% |
| 134 | HuntingdonshireEast of England | 23.8% |
| 135 joint | Isle of WightSouth East | 23.9% |
| 135 joint | Test ValleySouth East | 23.9% |
| 135 joint | Waltham ForestLondon | 23.9% |
| 138 | South StaffordshireWest Midlands | 24.5% |
| 139 | MorayScotland | 24.6% |
| 140 | BassetlawEast Midlands | 25.1% |
| 141 | RenfrewshireScotland | 25.2% |
| 142 | Mid and East AntrimNorthern Ireland | 25.6% |
| 143 | East SuffolkEast of England | 25.9% |
| 144 | Causeway Coast and GlensNorthern Ireland | 26.2% |
| 145 | Perth and KinrossScotland | 26.8% |
| 146 | WaverleySouth East | 27.9% |
| 147 | OxfordSouth East | 28.3% |
| 148 | GedlingEast Midlands | 28.6% |
| 149 | New ForestSouth East | 28.7% |
| 150 | DerbyEast Midlands | 28.8% |
| 151 | KnowsleyNorth West | 29.2% |
| 152 | Lisburn and CastlereaghNorthern Ireland | 30.1% |
| 153 | West DunbartonshireScotland | 30.3% |
| 154 | GreenwichLondon | 30.4% |
| 155 | Redcar and ClevelandNorth East | 32.4% |
| 156 | Stoke-on-TrentWest Midlands | 32.7% |
| 157 | CanterburySouth East | 34.1% |
| 158 joint | Argyll and ButeScotland | 35.2% |
| 158 joint | Milton KeynesSouth East | 35.2% |
| 158 joint | NewhamLondon | 35.2% |
| 161 joint | BlabyEast Midlands | 36.1% |
| 161 joint | Dumfries and GallowayScotland | 36.1% |
| 163 | East LindseyEast Midlands | 36.3% |
| 164 | East DevonSouth West | 36.6% |
| 165 | LewishamLondon | 36.7% |
| 166 | South OxfordshireSouth East | 37.6% |
| 167 | WinchesterSouth East | 37.9% |
| 168 | GuildfordSouth East | 38.1% |
| 169 | AngusScotland | 38.3% |
| 170 | MidlothianScotland | 39.1% |
| 171 | West LancashireNorth West | 39.3% |
| 172 | East HertfordshireEast of England | 39.9% |
| 173 | North TynesideNorth East | 40.1% |
| 174 | HartlepoolNorth East | 40.2% |
| 175 | SalfordNorth West | 40.5% |
| 176 | BromleyLondon | 40.7% |
| 177 | BexleyLondon | 40.9% |
| 178 joint | Epsom and EwellSouth East | 42.2% |
| 178 joint | SouthwarkLondon | 42.2% |
| 180 joint | FarehamSouth East | 42.7% |
| 180 joint | StevenageEast of England | 42.7% |
| 182 | DoncasterYorkshire and the Humber | 43.1% |
| 183 | GatesheadNorth East | 43.4% |
| 184 | King's Lynn and West NorfolkEast of England | 43.7% |
| 185 joint | Malvern HillsWest Midlands | 44.2% |
| 185 joint | North HertfordshireEast of England | 44.2% |
| 187 | WarwickWest Midlands | 44.4% |
| 188 | EastleighSouth East | 44.7% |
| 189 | North West LeicestershireEast Midlands | 45.4% |
| 190 | WychavonWest Midlands | 45.7% |
| 191 | SwaleSouth East | 46% |
| 192 | MansfieldEast Midlands | 46.3% |
| 193 | West BerkshireSouth East | 46.9% |
| 194 | CroydonLondon | 47.2% |
| 195 | WiltshireSouth West | 47.7% |
| 196 | LeicesterEast Midlands | 48% |
| 197 | BromsgroveWest Midlands | 48.2% |
| 198 | Shetland IslandsScotland | 48.4% |
| 199 | CumberlandNorth West | 49.8% |
| 200 | Blaenau GwentWales | 50.2% |
| 201 | WolverhamptonWest Midlands | 50.6% |
| 202 | NorthumberlandNorth East | 50.8% |
| 203 | Welwyn HatfieldEast of England | 51.6% |
| 204 | ErewashEast Midlands | 52.1% |
| 205 | Tonbridge and MallingSouth East | 52.2% |
| 206 | HarboroughEast Midlands | 52.3% |
| 207 joint | North WarwickshireWest Midlands | 53.3% |
| 207 joint | SomersetSouth West | 53.3% |
| 209 | Stratford-on-AvonWest Midlands | 53.4% |
| 210 | BaberghEast of England | 54% |
| 211 joint | AshfordSouth East | 54.6% |
| 211 joint | County DurhamNorth East | 54.6% |
| 213 | Armagh City, Banbridge and CraigavonNorthern Ireland | 55% |
| 214 | East LothianScotland | 55.3% |
| 215 | ThurrockEast of England | 55.6% |
| 216 | HavantSouth East | 55.8% |
| 217 | Windsor and MaidenheadSouth East | 56.1% |
| 218 | West LindseyEast Midlands | 57.1% |
| 219 | WiganNorth West | 57.6% |
| 220 | DorsetSouth West | 57.9% |
| 221 | North KestevenEast Midlands | 58.5% |
| 222 | HighlandScotland | 59% |
| 223 | Ards and North DownNorthern Ireland | 60.2% |
| 224 | CardiffWales | 61% |
| 225 | North YorkshireYorkshire and the Humber | 61.2% |
| 226 | TewkesburySouth West | 61.3% |
| 227 | NottinghamEast Midlands | 61.4% |
| 228 | BurnleyNorth West | 61.8% |
| 229 | PortsmouthSouth East | 61.9% |
| 230 | Mole ValleySouth East | 62.9% |
| 231 | SuttonLondon | 63% |
| 232 | Newcastle-under-LymeWest Midlands | 63.3% |
| 233 joint | Isle of AngleseyWales | 63.8% |
| 233 joint | Telford and WrekinWest Midlands | 63.8% |
| 235 joint | RushcliffeEast Midlands | 63.9% |
| 235 joint | Staffordshire MoorlandsWest Midlands | 63.9% |
| 235 joint | Westmorland and FurnessNorth West | 63.9% |
| 238 joint | DenbighshireWales | 64.2% |
| 238 joint | WalsallWest Midlands | 64.2% |
| 240 | Scottish BordersScotland | 64.6% |
| 241 | HaltonNorth West | 64.8% |
| 242 | ReadingSouth East | 65.4% |
| 243 | Reigate and BansteadSouth East | 65.5% |
| 244 | Merthyr TydfilWales | 65.6% |
| 245 joint | East HampshireSouth East | 65.7% |
| 245 joint | LutonEast of England | 65.7% |
| 247 | Nuneaton and BedworthWest Midlands | 65.8% |
| 248 | LincolnEast Midlands | 66.9% |
| 249 | ExeterSouth West | 67.2% |
| 250 | CheltenhamSouth West | 67.9% |
| 251 | Mid UlsterNorthern Ireland | 68.6% |
| 252 | BroxtoweEast Midlands | 68.8% |
| 253 joint | IpswichEast of England | 69.4% |
| 253 joint | TandridgeSouth East | 69.4% |
| 255 | ChorleyNorth West | 70.4% |
| 256 | High PeakEast Midlands | 71.1% |
| 257 | South KestevenEast Midlands | 71.2% |
| 258 | BuckinghamshireSouth East | 71.3% |
| 259 | ChichesterSouth East | 71.5% |
| 260 | St. HelensNorth West | 72% |
| 261 joint | PendleNorth West | 72.2% |
| 261 joint | ShropshireWest Midlands | 72.2% |
| 263 | NewportWales | 73.4% |
| 264 | Folkestone and HytheSouth East | 74.9% |
| 265 joint | Dundee CityScotland | 75.1% |
| 265 joint | TamesideNorth West | 75.1% |
| 267 | SandwellWest Midlands | 75.2% |
| 268 | TamworthWest Midlands | 75.3% |
| 269 | North SomersetSouth West | 75.4% |
| 270 | Neath Port TalbotWales | 75.5% |
| 271 | SevenoaksSouth East | 76% |
| 272 | Three RiversEast of England | 76.6% |
| 273 | DudleyWest Midlands | 78.4% |
| 274 | Forest of DeanSouth West | 79.9% |
| 275 | Wyre ForestWest Midlands | 81.1% |
| 276 joint | North LincolnshireYorkshire and the Humber | 81.4% |
| 276 joint | SwanseaWales | 81.4% |
| 278 | West OxfordshireSouth East | 81.6% |
| 279 | Basingstoke and DeaneSouth East | 83.2% |
| 280 joint | BolsoverEast Midlands | 83.4% |
| 280 joint | Newry, Mourne and DownNorthern Ireland | 83.4% |
| 282 | MeltonEast Midlands | 83.9% |
| 283 | St AlbansEast of England | 84.2% |
| 284 joint | MaidstoneSouth East | 84.5% |
| 284 joint | MedwaySouth East | 84.5% |
| 286 | EastbourneSouth East | 84.9% |
| 287 | Aberdeen CityScotland | 85% |
| 288 | RotherhamYorkshire and the Humber | 85.1% |
| 289 joint | AshfieldEast Midlands | 85.4% |
| 289 joint | CaerphillyWales | 85.4% |
| 291 | StroudSouth West | 85.6% |
| 292 joint | KirkleesYorkshire and the Humber | 85.7% |
| 292 joint | Rhondda Cynon TafWales | 85.7% |
| 294 | AberdeenshireScotland | 85.9% |
| 295 | Mid DevonSouth West | 86% |
| 296 | CarmarthenshireWales | 86.2% |
| 297 | Amber ValleyEast Midlands | 86.4% |
| 298 | DoverSouth East | 86.5% |
| 299 | OldhamNorth West | 86.8% |
| 300 joint | MonmouthshireWales | 86.9% |
| 300 joint | SheffieldYorkshire and the Humber | 86.9% |
| 302 | LewesSouth East | 87.2% |
| 303 | Derbyshire DalesEast Midlands | 87.3% |
| 304 | Ribble ValleyNorth West | 87.7% |
| 305 | CherwellSouth East | 88% |
| 306 | SunderlandNorth East | 88.6% |
| 307 joint | BoltonNorth West | 89.1% |
| 307 joint | BuryNorth West | 89.1% |
| 309 | Vale of GlamorganWales | 90.3% |
| 310 | CotswoldSouth West | 90.5% |
| 311 joint | DacorumEast of England | 90.9% |
| 311 joint | LancasterNorth West | 90.9% |
| 313 | RochdaleNorth West | 91% |
| 314 | HyndburnNorth West | 91.1% |
| 315 | ChesterfieldEast Midlands | 91.2% |
| 316 joint | North East DerbyshireEast Midlands | 91.3% |
| 316 joint | South GloucestershireSouth West | 91.3% |
| 318 | DartfordSouth East | 91.7% |
| 319 joint | BristolSouth West | 92% |
| 319 joint | RossendaleNorth West | 92% |
| 321 | PowysWales | 92.3% |
| 322 | South TynesideNorth East | 92.6% |
| 323 | WatfordEast of England | 92.7% |
| 324 | West NorthamptonshireEast Midlands | 92.8% |
| 325 | ArunSouth East | 93.6% |
| 326 | ConwyWales | 93.8% |
| 327 | BridgendWales | 94% |
| 328 | FlintshireWales | 94.3% |
| 329 | Fermanagh and OmaghNorthern Ireland | 94.6% |
| 330 | CalderdaleYorkshire and the Humber | 94.9% |
| 331 | GwyneddWales | 95% |
| 332 | CoventryWest Midlands | 95.2% |
| 333 | GraveshamSouth East | 95.7% |
| 334 | HerefordshireWest Midlands | 95.8% |
| 335 joint | North NorthamptonshireEast Midlands | 95.9% |
| 335 joint | TorfaenWales | 95.9% |
| 337 | BarnsleyYorkshire and the Humber | 96.1% |
| 338 | LeedsYorkshire and the Humber | 96.4% |
| 339 | Oadby and WigstonEast Midlands | 96.7% |
| 340 | WrexhamWales | 97.1% |
| 341 | TeignbridgeSouth West | 97.3% |
| 342 | Blackburn with DarwenNorth West | 97.8% |
| 343 | BradfordYorkshire and the Humber | 97.9% |
| 344 | PlymouthSouth West | 98% |
| 345 | CeredigionWales | 98.4% |
| 346 | TorridgeSouth West | 98.6% |
| 347 | North DevonSouth West | 98.8% |
| 348 | Derry City and StrabaneNorthern Ireland | 99% |
| 349 | WakefieldYorkshire and the Humber | 99.6% |
| 350 joint | Bath and North East SomersetSouth West | 99.7% |
| 350 joint | CornwallSouth West | 99.7% |
| 352 | PembrokeshireWales | 99.8% |
| 353 joint | AdurSouth East | 100% |
| 353 joint | Brighton and HoveSouth East | 100% |
| 353 joint | Isles of ScillySouth West | 100% |
| 353 joint | Orkney IslandsScotland | 100% |
| 353 joint | RutlandEast Midlands | 100% |
| 353 joint | South HamsSouth West | 100% |
| 353 joint | TorbaySouth West | 100% |
| 353 joint | West DevonSouth West | 100% |
| 353 joint | WorthingSouth East | 100% |
UKHSA and British Geological Survey, Indicative Atlas of Radon in Great Britain, version 3, 1km squares; UKHSA and British Geological Survey, Indicative Atlas of Radon for Northern Ireland, version 1, 1km squares, read at every census area · December 2022 · fetched 22 October 2026 · How this is measured
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