All train services to and from London Euston have been suspended due to power supply problems. Overhead power lines in Wembley have been damaged which has stopped all four lines in and out of the station. The problems began at 11:30 GMT and services are not expected to resume until at least 17:30 GMT. Virgin Rail and London Midland trains are the worst affected and tickets are being accepted by other operators at alternative stations. Network Rail engineers are at the scene of the overhead power line problems and an investigation has begun into what caused them to come down. Services from London Euston go to areas including Birmingham, Manchester and Glasgow.