After an almost-complete shutdown of Britain’s rail network for Christmas Day and Boxing Day, train services are slowly re-starting across the nation – but with some very significant gaps.

A combination of engineering work, strikes and staff shortage means that millions of prospective passengers face disruption between now and the new year.

At Britain’s busiest station, London Waterloo, a one-day strike involving members of the RMT union in a long-running dispute over the role of guards has sharply reduced service on South Western Railway. Some lines are closed completely.