Civil service union warns of possible strikes by junior doctors and teachers

General secretary Mark Serwotka predicts ‘coordinated and synchronised’ action from January

The head of the largest civil servants union has warned ministers that “coordinated and synchronised” strike action across the economy will “significantly escalate” from January.

Mark Serwotka, general secretary of the Public and Commercial Services Union (PCS), was speaking as his members employed in passport control for Border Force set up picket lines at Britain’s largest airports on Wednesday, in a four-day strike set to continue until New Year’s Eve.