Many people (councillors, Lewisham Council, Forest Hill Society) have been lobbying for an exit to the station into the Perry Vale car park. This would provide step free access to the platform and access to the lifts (although you would probably need a ticket - so it might not be ideal for access to London Road). Unfortunately there is no sign of TfL / Network Rail implementing this scheme, even when the platforms are lengthened in the next two years.