The work will take place between Monday and Friday (June 23 to June 27).
We have simplified and outlined all the details for you to plan your journey this week.
Tuesday to Thursday (July 1 to July 3):
Engineering work is taking place overnight at Lewisham station, closing some lines.
From approximately 11.15pm, trains will not be able to stop at Lewisham.
Trains via Bexleyheath will not run or will be diverted to run via Sidcup.
On Monday and Tuesday, trains on the Hayes line will be diverted after New Beckenham to Bromley South except the 12.09am train from London Cannon Street to Hayes which will not run.
Replacement buses will run on the following routes between:
London Bridge and Dartford via Bexleyheath.
London Bridge and Hayes (Monday and Tuesday only, departing at 11.50pm and 12.20am)
Lewisham and Hayes.
Lewisham and Dartford via Sidcup (12.50am from Lewisham only)
London Bridge and Orpington (1.10am from London Bridge only)
From 11.40pm until the end of service, buses replace trains between Dartford and Gravesend
The 11.50pm train from London St Pancras International to Faversham service will be replaced by accessible buses between Ebbsfleet International, Gillingham and Faversham calling at all stations except Higham, Newington and Teynham.
From 11.50pm until the end of service, trains via Maidstone East will be diverted after Otford to run via Sevenoaks
Replacement buses will run between:
Sevenoaks and Maidstone East calling at all stations except East Malling.
Maidstone East and Ashford International calling at all stations.
West Malling and East Malling minibus shuttle.
Tuesday to Friday (July 1 to July 4):
The 4.33am train from Gravesend to London Charing Cross via Sidcup train will start from Dartford at 4.50am.
To connect with this train at Dartford, passengers will need to use a Thameslink train between Gravesend and Dartford.