Over the weekend of 14-15 October, Network Rail need to carry out further testing of overhead wires in the Reading area. This is needed so that GWR can extend their new electric local trains to Didcot from January, which in turn releases diesel trains to cascade to the west.
It is therefore very important that GWR agree to the work. It is shorter notice than usual, and GWR are doing all they can to let customers know of the changes.
Unfortunately, they’re unable to divert into other London stations, and journeys involving stations between Reading and London will involve a replacement bus, or changing trains at Reading to Waterloo.
Some trains may not be running and journeys will be longer.
There is a broad outline of the services impacted, which include the sleeper, on a dedicated web page www.gwr.com/reading2017
This does not yet include specific timetables. These are still being finalised with Network Rail and they should be available on line soon.