There is disruption to train services in and out of London.

A signalling fault between Haddenham and Thame is impacting services between Oxford and London Marylebone.

Trains could be delayed by up to an hour or cancelled, and disruption is set to last until 9am, throughout the entire rush hour.

The 6.37 Chiltern Railways service from Oxford to London which was due to arrive at 8.03 is partially cancelled and will not be stopping at some stations.

The 6.47 in the opposite direction from London to Oxford is also partially cancelled.

The 8.11 from London to Oxford - due to arrive at 9.32 - is cancelled.

The 8.35 Marylebone to Banbury due at 9.51 is cancelled.