Border Force strikes resumed today after a short festive break.
Officers at Gatwick, Heathrow, Birmingham, Cardiff, Manchester and Glasgow airports walked out again and remain on strike until New Year’s Eve.
Around 1,000 union members are striking.
Troops and civil servants have been called in to help.
The Home Office says travellers should prepare for possible disruption.
“We know our action will cause disruption but the Government is to blame,” PCS general secretary Mark Serwotka said.
“These strikes could be called off tomorrow if Rishi Sunak puts some money on the table.”
Heathrow said a vast majority of flights should not be impacted.
