Passengers have been warned against traveling by train this weekend as “vital” emergency works are set to cause long delays.
The last-minute electrification works will start on Saturday and affect services passing through or traveling to stations in Didcot, Newbury, Reading and London.
Bus replacement services will operate between Slough, Reading, Theale and Didcot, but Great Western Railway say these are likely to be extremely busy and journey times significantly longer due to traffic.
The company is advising people to avoid all nonessential train journeys and has said all tickets for services through Reading on Saturday and Sunday can be used on Friday October 13th or Monday October 16th with no rebooking required.
Works will also continue in the Severn Tunnel over the weekend, causing trains to be diverted between Swindon and Newport on Saturday.
Network Rail will carry out engineering work in Cardiff on Sunday, which will mean services to and from London Paddington, Taunton and Portsmouth Harbour will terminate at Bristol Parkway.
Buses will run between Cardiff Central and Bristol Parkway.