Does BN43 flood?

Yes — parts of the BN43 district carry real flood risk: 27 of its 120 at-risk postcodes reach the Environment Agency's High likelihood band. The BN43 postcode district covers Marine, St Mary's, St Nicolas, Mash Barn, close to Shoreham Beach, Upper Beeding, and surrounding villages in West Sussex.

120 postcodes in the BN43 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 27 high, 15 medium, 60 low, 18 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 BN43 postcodes are at risk?

BN43 5DD up to High BN43 5DE up to High BN43 5DS up to High BN43 5DW up to High BN43 5FG up to High BN43 5HA up to High BN43 5HB up to High BN43 5HD up to High BN43 5HL up to High BN43 5LE up to High BN43 5LF up to High BN43 5LG up to High BN43 5LJ up to High BN43 5LN up to High BN43 5LY up to High BN43 5QH up to High BN43 5RB up to High BN43 5RJ up to High BN43 5RR up to High BN43 5YD up to High BN43 5YG up to High BN43 5YH up to High BN43 6RA up to High BN43 6RB up to High BN43 6RE up to High BN43 6RF up to High BN43 6RN up to High BN43 5DX up to Medium BN43 5FD up to Medium BN43 5FF up to Medium BN43 5FH up to Medium BN43 5HH up to Medium BN43 5HN up to Medium BN43 5QG up to Medium BN43 5TG up to Medium BN43 5YA up to Medium BN43 5YB up to Medium BN43 5ZE up to Medium BN43 6DG up to Medium BN43 6DH up to Medium BN43 6RJ up to Medium BN43 6RW up to Medium BN43 5DB up to Low BN43 5DG up to Low BN43 5ER up to Low BN43 5EY up to Low BN43 5FE up to Low BN43 5HG up to Low BN43 5HZ up to Low BN43 5LA up to Low BN43 5LD up to Low BN43 5LH up to Low BN43 5LL up to Low BN43 5LQ up to Low BN43 5LR up to Low BN43 5LT up to Low BN43 5LU up to Low BN43 5LW up to Low BN43 5NG up to Low BN43 5NH up to Low BN43 5NR up to Low BN43 5NS up to Low BN43 5NX up to Low BN43 5NY up to Low BN43 5PB up to Low BN43 5QJ up to Low BN43 5QL up to Low BN43 5QN up to Low BN43 5QP up to Low BN43 5QU up to Low BN43 5RD up to Low BN43 5RE up to Low BN43 5RF up to Low BN43 5RU up to Low BN43 5RW up to Low BN43 5RX up to Low BN43 5RY up to Low BN43 5SA up to Low BN43 5TA up to Low BN43 5TB up to Low BN43 5TD up to Low BN43 5TE up to Low BN43 5TF up to Low BN43 5TQ up to Low BN43 5UT up to Low BN43 5WH up to Low BN43 5WJ up to Low BN43 5WL up to Low BN43 5WP up to Low BN43 5WQ up to Low BN43 5WR up to Low BN43 5WS up to Low BN43 5XL up to Low BN43 5YE up to Low BN43 5YF up to Low BN43 5YL up to Low BN43 6DR up to Low BN43 6DS up to Low BN43 6EW up to Low BN43 6PA up to Low BN43 6RD up to Low BN43 6RH up to Low BN43 5BX up to Very low BN43 5FU up to Very low BN43 5HF up to Very low BN43 5HP up to Very low BN43 5JN up to Very low BN43 5JP up to Very low BN43 5JQ up to Very low BN43 5JR up to Very low BN43 5JS up to Very low BN43 5JX up to Very low BN43 5LP up to Very low BN43 5LS up to Very low BN43 5QF up to Very low BN43 5RA up to Very low BN43 5RL up to Very low BN43 5RT up to Very low BN43 5RZ up to Very low BN43 5SB up to Very low

Rivers and flooding history near BN43

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

105 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (8 at warning level or above), most recently 6 March 2026. Warnings cover flood areas, not individual addresses.

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

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

🏠 Buying or renting in BN43? 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

BN42 BN44 BN41 BN27 BN26 BN25 BN24 BN23

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.