W1W: 12 m clear of the highest tide in the London Bridge ledgers

W1W on the relief of London, with a tide staff: 12 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in W1W, W1W 8YP, stands 12 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, W1W 5DD, stands 23 m above it.

Ground at eight in ten of its postcodes: between 26 m and 28 m, measured from Ordnance Datum; the middle one stands at 27 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
Mostly in Westminster; partly in Islington.

Open W1W on the map