SE27: 30 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in SE27, SE27 9EH, stands 30 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, SE27 0QS, stands 86 m above it.
- Ground at eight in ten of its postcodes: between 43 m and 81 m, measured from Ordnance Datum; the middle one stands at 55 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Lambeth.