A strike by the border agency's union which would have sparked travel disruption for passengers arriving in the UK has been called off.
ISU, formerly the Immigration Service Union, had been set to hold its first strike in almost 30 years, with its 2,300 members walking out for 48 hours from midnight next Thursday, following a dispute over rosters.
But the union said it received an offer from the UK Border Agency management and had now agreed not to contest an injunction preventing the industrial action.
The union's national chairman, Andy Friend, said: "The national executive committee decided to call off action called for next week and ballot members as to whether the offer made by the department was acceptable.
"The ballot on whether to accept the offer will be conducted by post.
"We must emphasise that this is not a backing away from a commitment to take action if that is what the membership want."
He said if members rejected the offer, another ballot will be held on strike action.
The union has said a strike would cause major disruption at the UK's air and seaports, as well as locations in northern Europe such as Channel ports, Paris and Brussels.