Does BR1 flood?

Yes — parts of the BR1 district carry real flood risk: 11 of its 27 at-risk postcodes reach the Environment Agency's High likelihood band. The BR1 postcode district covers Downham, Plaistow, close to Bromley, Bickley, Grove Park, and surrounding villages in England.

27 postcodes in the BR1 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 11 high, 4 medium, 11 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 BR1 postcodes are at risk?

BR1 2AP up to High BR1 2BS up to High BR1 2ET up to High BR1 2EX up to High BR1 2QX up to High BR1 2RA up to High BR1 2RB up to High BR1 2WD up to High BR1 3NB up to High BR1 3ND up to High BR1 5QS up to High BR1 4LQ up to Medium BR1 5QP up to Medium BR1 5QT up to Medium BR1 5QU up to Medium BR1 2AN up to Low BR1 3ES up to Low BR1 3ET up to Low BR1 3EX up to Low BR1 4LP up to Low BR1 5BB up to Low BR1 5BD up to Low BR1 5BG up to Low BR1 5BJ up to Low BR1 5BL up to Low BR1 5BP up to Low BR1 4JY up to Very low

Rivers and flooding history near BR1

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

Bishops Avenue on the River Ravensbourne — 1.4 km away, highest on record 2.55m
Bromley South on the River Ravensbourne — 1.5 km away, highest on record 0.92m
Lower Camden on the Kyd Brook — 2 km away, highest on record 1.59m
Chinbrook Park on the River Quaggy — 2 km away, highest on record 0.75m

174 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (18 at warning level or above), most recently 27 August 2026. Warnings cover flood areas, not individual addresses.

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

September 1968 flooding — about 3.5 km from the centre

🏠 Buying or renting in BR1? 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

BR2 BR3 BR4 BR5 BR6 BR7

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.