On Monday rail services are disrupted amid ongoing industrial action as Aslef train driver members have started a series of strike action over pay and conditions.
Chiltern, Great Western Railway (GWR) and CrossCountry will be affected by widespread cancellations of services.
GWR said in a statement: “On Monday, a reduced, revised timetable will operate across several train operators, including GWR.
“Many parts of the GWR network will have no service at all and trains that are running will only be operating for a limited period during the day.”
“On the days after strikes, services could also be affected by a limited number of short-notice cancellations and alterations,” said GWR.