An Israeli embassy official at the centre of alleged plots to “influence” British student movements, lobbying groups and politicians has resigned his post.

Officials said Shai Masot would have no further contact with the Ministry for Strategic Affairs in Israel.

“We consider that this scandal is now done and behind us,” a spokesperson for the foreign ministry told Middle East Eye.

Mr Masot listed himself as a senior political officer on his business card but was labelled a “junior employee” by a spokesman after the scandal broke.

Israeli embassy official Shai Masot discussing ‘taking down’ pro-Palestinian MPs at a restaurant in London in October (Al Jazeera)

An undercover investigation by Al Jazeera showed Mr Masot discussing how to “take down” pro-Palestinian MPs, including the Conservative foreign minister Sir Alan Duncan.

Students and campaigners told a reporter posing as a pro-Israel activist they had been given funding and support from Israel’s embassy in London to counter the Boycott, Divestment and Sanctions (BDS) movement.

When asked whether he had ever “built a group”, Mr Masot replied: “Yeah, I did several things like that, yeah…in Israel and here. Nothing I can share but yeah.

“It’s good to leave those organisations independent, but we help them actually.”

The National Union of Students said it was investigating alleged attempts to influence last year’s leadership election, which saw its first black, Muslim, female president Malia Bouattia voted in.

Following claims that opposing NUS members held “secret meetings” with activists supported by the Israeli embassy, a spokesperson for the union said: “NUS takes these allegations seriously. We are looking into them and, when we have all the information available, the behaviour of NUS officers will be reviewed and appropriate action taken.”

Emily Thornberry, Labour’s shadow Foreign Secretary, called for an inquiry into the investigation, which included footage of Mr Masot calling Jeremy Corbyn “a crazy leader” and discussing failed attempts to set up a young friends of Israel group within the party.

The Israeli–Palestinian conflict intensifies Show all 10 1 /10 The Israeli–Palestinian conflict intensifies The Israeli–Palestinian conflict intensifies Medics evacuate a wounded man from the scene of an attack in Jerusalem. A Palestinian rammed a vehicle into a bus stop then got out and started stabbing people before he was shot dead AP The Israeli–Palestinian conflict intensifies Israeli ZAKA emergency response members carry the body of an Israeli at the scene of a shooting attack in Jerusalem. A pair of Palestinian men boarded a bus in Jerusalem and began shooting and stabbing passengers, while another assailant rammed a car into a bus station before stabbing bystanders, in near-simultaneous attacks that escalated a month long wave of violence AP The Israeli–Palestinian conflict intensifies Youths attend the funeral of Ahmad Sharake who was shot during clashes with Israeli forces in Jelazun refugee camp, near Ramallah, West Bank. Tensions in the area continue to run high following a series of stabbing attacks that have occurred around Israel in clashes between Palestinian youths and Israeli security forces Getty Images The Israeli–Palestinian conflict intensifies Palestinians throw molotov cocktail during clashes with Israeli troops near Ramallah, West Bank. Recent days have seen a series of stabbing attacks in Israel and the West Bank that have wounded several Israelis AP The Israeli–Palestinian conflict intensifies Women cry during the funeral of Palestinian teenager Ahmad Sharaka, 13, who was shot dead by Israeli forces during clashes at a checkpoint near Ramallah, at the family house in the Palestinian West Bank refugee camp of Jalazoun, Ramallah AP The Israeli–Palestinian conflict intensifies A wounded Palestinian boy and his father hold hands at a hospital after their house was brought down by an Israeli air strike in Gaza Reuters The Israeli–Palestinian conflict intensifies Palestinians look on after a protester is shot by Israelis soldiers during clashes at the Howara checkpoint near the West Bank city of Nablus EPA The Israeli–Palestinian conflict intensifies A lawyer wearing his official robes kicks a tear gas canister back toward Israeli soldiers during a demonstration by scores of Palestinian lawyers called for by the Palestinian Bar Association in solidarity with protesters at the Al-Aqsa mosque compound in Jerusalem's Old City, near Ramallah, West Bank AP The Israeli–Palestinian conflict intensifies Undercover Israeli soldiers detain a Palestinian in Ramallah Reuters The Israeli–Palestinian conflict intensifies Palestinian youth burn tyres during clashes with Israeli soldiers close to the Jewish settlement of Bet El, in the West Bank city of Ramallah, after Israel barred Palestinians from Jerusalem's Old City as tensions mounted following attacks that killed two Israelis and wounded a child

“Improper interference in our democratic politics by other states is unacceptable whichever country is involved,” she said.

“This is a national security issue…the Government should launch an immediate inquiry into the extent of this improper interference and demand from the Israeli government that it be brought to an end.”

Members of the Labour Friends of Israel hit back at suggestions it had been influenced, saying Mr Masot had been “exaggerating his role”.

Mr Masot resigned swiftly after the first clip from Al Jazeera’s four-part investigation was released late on Saturday night.

A spokesperson for the Israeli embassy told The Independent he stepped down at the beginning of the week.

“The Embassy of Israel rejects the remarks concerning Minister Duncan, which are completely unacceptable,” a statement said.

Sir Alan Duncan was targeted after comparing the situation in a West Bank city to apartheid (Getty)

“The comments were made by a junior embassy employee who is not an Israeli diplomat, and whose employment with the embassy has terminated.”

Maria Strizzolo, a Tory aide filmed discussing the “take down” with Mr Masot, also resigned her post at the Skills Funding Agency and part-time role as aide to skills minister Robert Halfon.

Commons Speaker John Bercow told MPs that the Houses of Parliament pass available to Ms Strizzolo was in the process of being returned.

The Israeli ambassador, Mark Regev, personally apologised to Sir Alan and the Foreign Office said it had accepted that Mr Masot’s “comments do not reflect the views of the embassy or government of Israel”.

Boris Johnson, who Mr Masot and Ms Strizzolo agreed was “basically solid on Israel” in the undercover footage, also said he considered the row resolved.

“The Israeli ambassador made a very full apology for what had taken place and the gentleman in question, the diplomat in question, no longer seems to be a functionary of the embassy in London,” the Foreign Secretary said.