Military personnel checking passports at UK airports appear to be ensuring passengers are not being delayed on the first day of Border Force strikes.
Heathrow and Gatwick both said their immigration halls were operating as normal on Friday, while one passenger said it was the quickest he has got through border control in a decade.
Around 1,000 members of the Public and Commercial Services (PCS) union 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 27 December.
About 250,000 passengers are arriving on flights at affected airports on Friday, including around 10,000 who landed at Heathrow before 7am.
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 use of military personnel trained to check passports appears to be preventing delays.
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 so many people’s lives, particularly at Christmas time”, adding: “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.”
PCS general secretary Mark Serwotka said travellers could face months of disruption unless the government comes forward with an improved pay offer for Border Force staff.
“We think that the action at the borders is going to be very effective, we hope that the government will therefore do the right thing and get around the negotiating table and put some money upfront,” he told BBC Radio 4’s Today programme.
“If not, we are raising money, we have a strike fund that means we can sustain this action; our strike mandate lasts right up until May.”
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 £100m.
RMT railway workers will stage another strike from 6pm on Christmas Eve, which could prevent people from making it home for Christmas.
A planned strike by ambulance workers in the GMB on 28 December has been suspended, the union announced, but nurses in England will strike on 18 and 19 January unless negotiations are opened, the Royal College of Nursing stated.
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