Great Western Railway is advising customers to check their journey on Sunday morning before leaving home because of a shortage of train crew.

With fewer people available to work, GWR is warning of short notice cancellations and alterations, especially on long distance services from London Paddington.

Journey planners and other industry systems will not be correct until the early hours of Sunday morning as GWR works to staff as many trains as possible. 

Customers are being warned that they will need to check their journey on Sunday morning.

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If your train is cancelled, you can use your existing ticket on the next available service, GWR has stated.

Rail replacement buses will operate on the Kemble line between Swindon and Gloucester.

GWR expects to run a full level of service on Monday (June 17).