Deptford Station was on the London to Greenwich Railway; the first of the London railways (opened 1836-1838). Much of the railway was on a large brick viaduct (of 878 arches) which was built from London Stock bricks obtained from Faversham. These were shipped up the river in barges and unloaded at the Deptford Creek. Much building and rebuilding has occurred since 1838 but some very old bricks are still visible at Deptford Station.
The repointing is fairly modern but these are old stock bricks, classic hand made bricks. The red bricks are much later additions.