WC2R: 2 of 104 postcodes stand below a spring high tide

The ground at 2 of WC2R's 104 postcodes (2%) 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 5.4 m and 15 m, measured from Ordnance Datum; the middle one stands at 13 m.
• 11 of 104 stand lower than the 1953 tide (5.41 m).
• 10 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
• Mostly in Westminster; partly in Islington.