National Rail is launching its new timetable across the country on Sunday (May 18) with Southeastern making some changes to its services that will affect rail users in South East London.
Meanwhile the line between Charlton and Blackheath will be closed for 10 weeks from Sunday as Network Rail will be carrying out essential repairs on the 175-year-old, mile-long Blackheath Tunnel which will cost £10 million.
During this period from May 18 to July 27, trains will be diverted via Greenwich, stopping additionally at Westcombe Park, Maze Hill, Greenwich and Deptford.
Connections from Lewisham to the Woolwich line can be made by using the DLR between Lewisham and Greenwich, with tickets being accepted on the DLR at no extra cost.

With the general timetable changes coming into effect, on the Bexleyheath line from Charing Cross to Dartford and Gravesend via Bexleyheath, there will be an additional service on weekdays at 10.25am from Charing Cross to Dartford, and an additional weekday service at 3.23pm from Dartford to Charing Cross.
The 7.23am train from Dartford to Charing Cross will now have 12 carriages instead of 10, and the 6.07pm service from Cannon Street to Strood via Bexleyheath will be extended to Rochester.
On the Sidcup line, a new 10-carriage train will replace an older one for the 7.33am service from Gravesend to Charing Cross. The 6.20pm train from Charing Cross to Gravesend will also be extended from eight carriages to 10.
On the Hayes line with trains running between Charing Cross and Catford Bridge, Elmers End and Hayes, some trains will be retimed on weekdays to “improve the interval between services and to reduce overcrowding”.
Also, from 4.18pm and each half hour until 7.18pm, trains will depart later from Charing Cross and the interval from London Bridge will be changed from the current 9/21 minute interval to a 13/17 minute interval.
On the Grove Park line running between London and Bromley North, Orpington and Sevenoaks via Grove Park, the 7.22am train from Orpington to Cannon Street will have 10 carriages rather than eight.
The 7.50am train from Sevenoaks to Charing Cross and the 4.31pm and 7.01pm trains from Charing Cross will be lengthened to 12 carriages from 10.