Israel has shared a haul of secret files showing Iran’s determination to build a nuclear bomb with Britain’s secret services, ahead of this week’s visit by Prime Minister Binyamin’s Netanyahu’s to the UK.

The move is designed to increase the pressure on the UK and its European partners to scrap the nuclear deal with Tehran.

One of the documents, according to The Times, amongst the cache of 100,000 files taken from a warehouse by Mossad agents in Tehran in January is said to be a memo that has the responsibility for producing weapons-grade uranium to Iran’s defence ministry.

Mr Netanyahu is expected to use the finds from the files to make the case to Prime Minister Theresa May on Thursday that the deal with Tehran has been based on a false pledge from Iran that it never pursued a nuclear weapons programme.

A senior Israeli intelligence officer said: “What Iran told the International Atomic Energy Agency about its capacities was almost comical compared to what we have here.”

David Albright, a former nuclear inspector in Iraq, also told The Times that the Israeli criticisms of Tehran’s failure to acknowledge its past work on nuclear weapons was correct.

Another document shown to the newspaper from the cache is said to show the approval of uranium enrichment for use in a weapon.

The document is signed by Amir Daryaban Ali Shamkami, now military adviser to the supreme leader Ayatollah Ali Khamenei.

President Trump had cited Iran’s refusal to admit to the scope of its weapons programme as a reason for the renewal of US sanctions against Iran.

Israeli PM Netanyahu will this week attempt to persuade the UK, and then France and Germany to back the US President’s move.