UB3: 17 m clear of the highest tide in the London Bridge ledgers

UB3 on the relief of London, with a tide staff: 17 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in UB3, UB3 5HN, stands 17 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, UB3 2TX, stands 38 m above it.

Ground at eight in ten of its postcodes: between 26 m and 40 m, measured from Ordnance Datum; the middle one stands at 32 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Hillingdon.

Open UB3 on the map