Speculation grew last night that a senior Israeli diplomat would be expelled as a mark of the “anger” within the Government that British passport holders had been put at risk as a result of the operation.

A ministerial statement to be made to Parliament will formally name the Israeli security services as responsible for the cloning of up to 15 British passports, which were copied after being taken away by airport officials.

The statement will say that it proved impossible to confirm definitively whether Mossad, the feared Israeli secret intelligence service, was responsible for the operation, with suspicion also resting on the Military Intelligence Directorate.

But the probe had determined for certain that the passports were cloned when British citizens passed through airports on their way into Israel, with officials taking them away for “checks” which lasted around 20 minutes.