The announcement portends disruption for travelers planning to cross the English Channel.
British customs officers in England and France will strike for four days during the next school holidays, from February 17 to 20.
Some "1,000 Border Force officers in Dover, Calais, Coquelles and Dunkirk" are concerned, the PCS union said in a statement on Tuesday.
The news comes as the UK faces the biggest day of strikes in a decade on Wednesday.
From teachers to railway workers to civil servants: up to half a million people could strike to demand salary increases in a country in the grip of the economic crisis.
Consequences for holidaymakers
The general secretary of the PCS union, Mark Serwotka, estimated in the press release that “the strikes announced today within the Border Force will have consequences for people returning from vacation”.
"If the government has called in untrained soldiers to replace our highly qualified agents at airports at Christmas, it will not be able to do so in France," he said.
According to him, “the responsibility for these strikes lies with the ministers who refuse to put more money on the table”.
In December, some 1,200 soldiers had been mobilized in the United Kingdom to replace striking paramedics and border police personnel.
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