The major nine day Hither Green line closure starts on Saturday 25 July and Sunday 2 Aug (inclusive)
The Sidcup, Grove Park and Bromley North lines which are routed through Hither Green will close while Network Rail completes its long standing critical signalling upgrades.
The work will improve reliability for passengers in South East London.
There will be replacement buses with provision for social distancing which means there may be queuing at busier times.
Passengers are encouraged to make all or part of their journey on foot, by cycle or car if possible.
The Petts Wood service and Orpington services into London will be routed via New Beckenham.
Sidcup services will run via Bexleyheath, Woolwich and Dartford.
Tickets will be valid on reasonable alternate routes.
And they made a short video for us, all special like.