The work will affect trains on Sunday (January 12) only.
Services will continue as normal on Saturday (January 11).
We have compiled all the details on these works so that you can plan your journey this week.
Highspeed services via Gravesend:
Trains between London St Pancras International and Ramsgate via Faversham will only run between London St Pancras International and Ebbsfleet International.
Sidcup Line:
Trains between London Charing Cross and Gravesend will not run.
Services which usually run between London Charing Cross and Dartford via Sidcup will run normally.
Medway Valley Line:
Trains between Paddock Wood and Strood will only run between Paddock Wood and Maidstone West
Replacement buses will run between:
Ebbsfleet International and Strood, calling at Gravesend only.
Dartford and Gillingham, calling at all stations except Higham.
Gravesend and Maidstone West, calling at all stations except Higham.
Gravesend and Strood minibus calling at Higham.
Engineering work occurs between Ashford International and Headcorn, closing all lines early on Sunday morning.
As a result, the 6.35am train from Ashford International to London Charing Cross service will be amended to start from Headcorn at 6.48am.
A replacement bus will run earlier from Ashford International at 5.51am to Headcorn via Pluckley, connecting with the train.