WC1R: 14 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in WC1R, WC1R 5HT, stands 14 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, WC1R 4SG, stands 19 m above it.
- Ground at eight in ten of its postcodes: between 20 m and 25 m, measured from Ordnance Datum; the middle one stands at 24 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Camden.