People travelling to the UK, including those coming home for Christmas, have been hit with a warning for the rest of December.
The Government said it continues to make preparations to minimise queues at the border including training military personnel to support Border Force during strikes. Staff at a number of airports and ports will walk out on a number of dates this month, in an ongoing row over pay and conditions.
Industrial action is due to begin on Friday, December 23, after being announced by the Public and Commercial Services (PCS) Union. Gov.uk guidance now warns UK arrivals should prepare for disruptions at the border.
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Part of a statement from Border Control said: "While the government is taking action to minimise disruption, travellers due to arrive in the UK over the Christmas period are warned to expect delays and disruption over the strike action affecting border control.
"Passengers should be prepared for longer wait times and should check with their travel agents, tour operators and airlines/carriers about possible disruptions to their journey prior to travelling."
Everyone eligible to use eGates is encouraged to do so as the "quickest and most efficient way to pass through border control".
Gov.uk information adds: "Strikes are not the only factor that might cause disruption, for example adverse weather or flight delays may impact journeys, meaning it is essential for passengers to plan ahead and keep up-to-date with the latest information, through relevant sources including airport and carrier websites."
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