DELAYS of up to an hour are now expected on trains between Oxford and Banbury this morning due to overrunning engineering works.

Network Rail, which manages the railways, says operators being affected include Great Western Railways, Cross Country and Chiltern Railways, with the problem likely to last until 10am. 

The length of delays has increased after the firm initially said passengers would be held up by about 30 minutes.

It tweeted to apologise and said its engineers were on site and "working to resolve the problem."