SW6: 373 of 1,505 postcodes stand below a spring high tide

The ground at 373 of SW6's 1,505 postcodes (25%) is lower than an ordinary spring high tide at London Bridge (3.9 m above Ordnance Datum).

• Ground at eight in ten of its postcodes: between 3.4 m and 5.6 m, measured from Ordnance Datum; the middle one stands at 4.5 m.
• 1,304 of 1,505 stand lower than the 1953 tide (5.41 m).
• 1,198 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
• In Hammersmith and Fulham.