This is more than a little worrying considering Iran’s alleged form in Argentina.

Iranian spies have been photographing synagogues and other Jewish buildings in Britain, seemingly in preparation for terrorist attacks.

MI5, the security service, and Special Branch officers have discovered Iranians photographing such buildings in London and the Home Counties for some time, with an upsurge of activity over the past two months.

Up to 20 Iranians, most studying here legally as students at universities, are involved in the surveillance and two men have been asked to leave the country as a result.