There will be no direct trains between Worcester and London until June in order for repair works to take place.
Train users heading up to London should expect busier trains than usual between Oxford and London Marylebone from Monday (April 17).
Great Western Railway is unable to operate any trains between Oxford and Didcot Parkway until June 10 in order for Network Rail repairs on a bridge to take place.
This means Chiltern Railways will be the sole option for passengers hoping to travel to London or Oxford.
However, Chiltern Railways has added additional seating and carriages to routes where possible.
GWR has confirmed there is a limited rail replacement bus service in place, but this is likely to be “very busy” and customers should expect “significant delays” to their journeys.
The replacement bus services are operating between Didcot and Oxford, in both directions, offering a non-stop journey between the two stations.
Some of these services will call at Appleford, Culham and Radley for customers travelling to or from those stations.
GWR has advised that customers travelling between Worcestershire Parkway, Pershore, Evesham and London stations should instead travel via Birmingham stations on Cross Country or West Midlands Railways service, which are accepting GWR tickets.
At Birmingham stations, passengers will then be able to board an Avanti West Coast service towards London Euston or a Chiltern Railways service to London Marylebone.
Trains continue to operate largely as planned between Hereford, Worcestershire and Oxford; however, they may be re-timed and customers should check before travelling, especially for journeys involving very early morning or late evening services, GWR has warned.
Other services accepting GWR tickets during the disruption:
Transport for Wales between Hereford and Newport, where you can change for GWR services to London Paddington
Oxford Bus Company route 35 between Oxford City Centre and Abingdon
Stagecoach route S3 between Oxford and Charlbury
Stagecoach route S6 between Swindon and Oxford (Osney Island bus stop which is a six-minute walk from Oxford station)
Stagecoach route S7 between Oxford and Hanborough
Thames Travel X2 and X32 bus services between Didcot and Oxford
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