Does UB3 flood?

Yes — parts of the UB3 district carry real flood risk: 2 of its 8 at-risk postcodes reach the Environment Agency's High likelihood band. The UB3 postcode district covers Heathrow Villages, Pinkwell, Hayes Town, Wood End, close to Cranford, Southall, Yiewsley, and surrounding villages in parts of Greater London and Surrey.

8 postcodes in the UB3 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 2 high, 5 low, 1 very low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which UB3 postcodes are at risk?

UB3 4AH up to High UB3 4QX up to High UB3 1DD up to Low UB3 4QZ up to Low UB3 5HE up to Low UB3 5HL up to Low UB3 5HN up to Low UB3 5HP up to Very low

Rivers and flooding history near UB3

The rivers that matter here, each monitored live on FloodRadar:

Cranford Park on the River Crane — 0.9 km away, highest on record 2.64m
Yeading, Brookside Road on the Yeading Brook — 3.5 km away, highest on record 1.36m
Yiewsley on the Frays River — 4.2 km away, highest on record 1.20m
West Drayton on the River Colne — 4.3 km away, highest on record 0.77m

1,347 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (43 at warning level or above), most recently 29 September 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

October 2023 flooding — about 8.4 km from the centre
Winter 2013/2014 (2013) — about 9 km from the centre
06JanuaryNewYear2003 (2002) — about 2.6 km from the centre
May 1988 flooding — about 7.3 km from the centre

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in UB3? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

UB2 UB4 UB1 UB5 UB6 UB7 UB8 UB9

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.