A train line will be closed between Bicester North and Leamington Spa on Sunday due to engineering works.
Chiltern Railways passengers have been urged to check their journeys on July 14 as bridge works between Bicester North and Kings Sutton and tunnel works between Banbury and Leamington Spa will disrupt services.
There will be no through trains between London Marylebone and Birmingham and no services will operate from Bicester North Station.
Replacement buses will operate from Bicester Village to Banbury and Leamington Spa, Bicester Village to Banbury and Stratford Upon Avon, Bicester Village to Kings Sutton and Banbury, and Leamington Spa to Birmingham Moor Street.
Journeys will take longer so passengers should allow extra time and confirm details before setting off.
Customers are also encouraged to book tickets in advance via the website or Chiltern app.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here