Greater Anglia

Services to London from Norfolk, Suffolk and Essex are all travelling at "much reduced" speeds.

Investigators say a carriage was dragged across sleepers and ballast for about 1.5 miles (2.4km).

Rail company says the work will help to keep routes reliable for years to come.

Trains are running again along the route where a train partially came off the tracks on 14 August.

Train passengers in Essex are being warned of slower speeds and timetable changes - what's going on?

Residents say the loud announcements are spoiling the tranquillity of their gardens and allotments.

Greater Anglia says repair work has started after the train was removed from the tracks.