Post #98 raised an interesting issue regarding access from Perry Vale during the closure of the subway.
Deputy mayor of Lewisham, Heidi Alexander, has received an assurance from Southern that during the time the subway is closed for renovation the entrance from the Perry Vale side will be kept open (manned or unmanned).
Passengers will be able to use exits on either side of the railway but non-passengers will need to walk round the south circular during this time. My understanding is that the subway will only be closed for two weeks and the improvements will be most welcome.