Chiltern Railways has warned customers of expected service disruption from upcoming ASLEF (Associated Society of Locomotive Engineers and Firemen) union action.

The train operator has been working on contingency plans to provide as many services as possible, but an overtime ban and strike action will result in a significantly reduced service.

Passengers have been advised to check before they travel on days when trains are running.  

There will be a reduced timetable in operation across the Chiltern network from Monday,  January 29 and Friday, February 2, as well as Tuesday, February 6.

On Saturday, February 3, the Chiltern main line will be closed between Princes Risborough and London, meaning that rail replacement bus services will be in place between Bicester and Aylesbury Vale Parkway, and Princes Risborough and Hillingdon Underground station, for onward connections into London. 

On Sunday, February 4, no trains will run as the withdrawal of overtime and rest day working has a higher impact on Chiltern’s Sunday service. 

On Monday, February 5, strike action on the Chiltern network means that no trains will run.  

Normal service is expected to resume on Wednesday, February 7. 

Richard Allan, Managing Director at Chiltern Railways, said:  "We understand the impact that this period of industrial action will have on our customers and we are sorry for the disruption to their travel plans. 

"Customers should check their entire journey on each day of the period of industrial action, with operators affected differently on each day."