More than 500 Border Force members of the Public and Commercial Services (PCS) union are to take a further three days’ action in a dispute over a new roster already imposed.
The PCS said walkouts “will disrupt passport checks for travellers coming into the UK at Heathrow”.
Strikes are scheduled for 31 May and 1 and 2 June. This will be followed by three weeks of action “short of a strike” that will include a work to rule and overtime ban running from 4 to 25 June.
The PCS said action on 29, 30 April, 1 and 2 May was “well supported”, with members “clearly in favour of further action should there be no movement from the Home Office”.