For five days in February 1989 the BBC Railwatch camera team followed British Rail staff in a live to air broadcast on the occasion of the electrification of the Eastern Coast Main Line from London to York.
British Rail's East Coast main line is a railway in the throes of change. From London to Edinburgh the overhead wires are going up, and the new high-speed electric trains are being tested. Today's Railwatch looks ahead to the evolving railway, and talks to the people who are working on tomorrow's technology.