Travellers could face months of disruption unless the Government makes an improved pay offer, the leader of striking Border Force staff has warned.
Public and Commercial Services (PCS) union general secretary Mark Serwotka predicted there would be a “huge escalation” in industrial action in January across the civil service unless ministers enter into negotiations.
Around 1,000 PCS members employed by the Home Office to operate passport booths walked out on Friday at Heathrow, Birmingham, Cardiff, Gatwick, Glasgow and Manchester airports, as well as the Port of Newhaven in East Sussex.
The Border Force strikes will take place every day for the rest of the year, except December 27.
Mr Serwotka said he hoped the Government will “do the right thing and get around the negotiating table and put some money upfront”.
He told BBC Radio 4’s Today programme: “We are raising money, we have a strike fund that means we can sustain this action.
“Our strike mandate lasts right up until May. We will be supporting this action up to May and we would re-ballot again if we have to.
“I think in January what you will see is a huge escalation of this action in the civil service and across the rest of our economy unless the Government get around the negotiating table.”
About 250,000 passengers are arriving on flights at affected airports on Friday.
Travellers were warned by Border Force bosses to expect delays amid fears long queues at passport control could lead to people being held on planes, disrupting subsequent departures.
But the deployment of military personnel to check passports ensured passengers did not appear to be delayed on the first day of the strikes.
A Heathrow spokeswoman said: “The morning arrivals peak has started well.
“Immigration halls are free-flowing at Heathrow, with Border Force and the military contingency providing a good service.”
A spokesman for Gatwick told the PA news agency: “Everything is going OK at the moment.
“There’s plenty of staff. The e-gates are all operating. It’s going well.
“There’s no delays as far as we’re aware, and no queues at the moment.
“I’m standing in arrivals and passengers are flowing through as normal.”
Aislinn Laing, a co-bureau chief for international news agency Reuters in Spain, wrote on Twitter shortly before 10am: “Just flown into Gatwick from Madrid.
“Military manning border, absolutely no queues, quicker than usual and service from a naval rating with a beaming smile.
Our Strike Action has only just begun and we will not be backing down until @RishiSunak & co get a grip of what’s actually happening.
— PCS Union (@pcs_union) December 21, 2022
We are ready to talk. #PCSonStrike #BlameTheGovt pic.twitter.com/6GcsxY8AeP
“Was bracing to feel a bit embarrassed about the state my country is in but instead feeling very proud.”
A passenger with the Twitter username @olicohen wrote: “Got through Heathrow airport border control in the quickest time in 10 years.
“Being run with military precision.
“If only the army could run it permanently.”
Defence Secretary Ben Wallace announced that members of the armed forces will receive an extra £20 for each day spent training or deployed to provide cover for industrial action during the festive period.
More than 1,000 personnel from across the Navy, Army and RAF have received training in recent weeks for roles such as passport checking and ambulance driving.
Meanwhile, postal deliveries and driving lessons are set to be disrupted by strikes in the days before Christmas.
Royal Mail, National Highways and Driver and Vehicle Standards Agency (DVSA) employees are taking industrial action on Friday.
They will continue their strike into Saturday, when staff represented by the Rail, Maritime and Transport (RMT) union, Abellio London bus workers and Environment Agency workers will launch separate waves of action.
This follows two days of strikes by NHS staff, with thousands of nurses walking out on Tuesday and ambulance workers joining picket lines on Wednesday.
Prime Minister Rishi Sunak said he is “sad and disappointed about the disruption that is being caused to so many people’s lives, particularly at Christmas time”.
He went on: “When it comes to the difficult question of setting public pay, the Government has acted fairly and reasonably in accepting all the recommendations of the public sector pay review bodies.”
National Highways workers responsible for motorways and major A-roads in London and the South East, also represented by the PCS, will continue their four-day walkout, which started on Thursday.
Postal workers represented by the Communication Workers Union walked out for their fifth day of December action in a move Royal Mail criticised as “a cynical attempt to hold Christmas to ransom”.
The company said it will be doing all it can to deliver Christmas mail, saying the industrial action has cost it £100 million.
RMT railway workers will stage another strike from 6pm on Christmas Eve, which could prevent people from making it home for Christmas.