There will be a diversion from the Alton line in place for a number of hours (fast from Ash Vale to Ascot, then Virginia Water, Staines and Putney) with bustitution between Farnborough and Aldershot for mainline passengers. These services will run as 1Nxx.
Only on Saturday.That all sounds very over complicated, plus I'm sure the commuters on that line won’t be impressed at the extended journey or the drunken race goers. Surprised they haven’t ran the weybridges down to ascot and put a shuttle service on Virginia water - Weybridge, I think they might’ve done this for some event at Windsor recently.
It looks like, on the Saturday
* Reading runs as normal
* Alton diverted via Ascot
* Windsor diverted to Reading
* Weybridge diverted to Windsor
* Virginia Water to Weybridge by bus
Weekday trains involve a handful of Windsor trains being diverted to Bracknell and some Weybridge trains being diverted to Windsor. There are also a number of other empty stock arrivals at Ascot in the evening to form relief trains.