lancastria
Member
If you include TFL stations, there are a whole load on the former East London Line, now the Highbury and Islington to West Croydon line, that are less than half a mile apart.
Highbury and Islington - Canonbury
Dalston Junction - Haggerston
Haggerston - Hoxton
Shadwell - Wapping
Wapping - Rotherhithe
Rotherhithe - Canada Water
Canada Water - Surrey Quays
Of these, Rotherhithe - Canada Water is the shortest at 17 chains = 374 yards. The stations can be seen from each other.
Highbury and Islington - Canonbury
Dalston Junction - Haggerston
Haggerston - Hoxton
Shadwell - Wapping
Wapping - Rotherhithe
Rotherhithe - Canada Water
Canada Water - Surrey Quays
Of these, Rotherhithe - Canada Water is the shortest at 17 chains = 374 yards. The stations can be seen from each other.