The work will occur between Monday and Friday (March 31 to April 4).
We have simplified and outlined all the details for you to plan your journey this week.
Monday (March 31):
From 10.30pm until the end of service, replacement buses will run between Tonbridge and Hastings.
Monday to Thursday (March 31 to April 3):
Engineering work will affect trains towards Hayes from approximately 11pm until the end of service.
From the 10.48pm train until 11.18p, the London Charing Cross to Hayes services trains will be diverted after New Beckenham to run to Orpington, calling at Beckenham Junction.
After 11.30pm, no further trains will run from London to stations on the Hayes line, and the last train between London Charing Cross or London Cannon Street and Hayes will only run as far as Lewisham.
Trains from Hayes towards Lewisham and London are not affected.
From 11.05pm until the end of service, replacement buses will run between Beckenham Junction and Hayes.
The last two buses will start back from Lewisham at 12.03am to 12.33am.
Ebbsfleet International:
The 11.50pm train from London St Pancras International to Faversham service will be replaced by buses between Ebbsfleet International, Gillingham and Faversham, calling at all stations except Higham, Newington and Teynham.
Tuesday (April 1):
The weekly engineering work which takes place every Tuesday between Faversham and Ramsgate will not take place, and trains will run normally between Faversham, Margate and Ramsgate.
Tuesday to Friday (April 1 to April 4):
The 4.14am train from Gillingham to Tonbridge train will start from Strood at 4.30am.
A replacement bus will leave Gillingham at 3.55am calling at all stations to Strood.
Tuesday, Thursday and Friday (April 1, April 3, and April 4):
From 12.20am until the end of service, replacement buses will run between Meopham and Gillingham or Sittingbourne.
A connecting train service will run from Sittingbourne to Ramsgate.
Wednesday (April 2):
From 12.30am until the end of service, replacement buses will run between Rochester and Gillingham or Sittingbourne.
A connecting train service will run from Sittingbourne to Ramsgate.
Wednesday and Thursday (April 2 and April 3):
The 11.07pm train from London St Pancras International to Ramsgate via Dover Priory service will run non-stop between Dover Priory and Ramsgate by an alternative route and will stop additionally at Faversham.
A replacement bus will run between Dover Priory and Sandwich, calling at all stations.
Wednesday to Friday (April 2 to April 4):
From 12.20am until the end of service, accessible buses replace trains between Lewisham and Dartford via Bexleyheath. Trains will be diverted to run via Sidcup instead.