Passengers at Milton Keynes Central are currently facing disruption due to points failure.
Due to a points failure between Milton Keynes Central and Watford Junction all lines are currently disrupted.
As a result, National Rail say some trains may be cancelled, delayed by up to 30 minutes or revised.
Avanti West Coast and London Northwestern Railway are both affected.
Disruption is expected until 11:00.
This is a live article which will be updated as news comes in.