There are delays of up to 30 minutes on:
Arriva Trains Wales services between Cardiff Central and Cheltenham Spa, on CrossCountry Services between Birmingham New Street and Bristol Temple Meads and First Great Western services between Worcester Shrub Hill and Bristol Temple Meads and between Worcester Shrub Hill and Swindon.
Fewer trains are able to run through the area because of vandalism at Cheltenham Spa and services are liable to alteration or cancellation.
There is no indication as to when normal service will be resumed.
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The new man in charge will watch his side from the Director's Box at Charlton this afternoon.
Police are resuming their search for a man who was last seen swimming in the river in the Welsh Back area. Divers have been deployed.