British-Egyptian activist shared claim of Zionist ‘campaign’ against him after backlash over ‘abhorrent’ posts

However, The Telegraph subsequently reported that el-Fattah had a history of offensive social media posts, including one in which he said: “Killing any colonialists and specially Zionists heroic, we need to kill more of them."

Another post also saw him declare himself a “racist”, adding: “I don’t like white people.”

Since the posts resurfaced, el-Fattah had offered a "fulsome apology", saying: “Looking at the tweets now – the ones that were not completely twisted out of their meaning – I do understand how shocking and hurtful they are, and for that I unequivocally apologise.

"They were mostly expressions of a young man’s anger and frustrations in a time of regional crises (the wars on Iraq, on Lebanon and Gaza), and the rise of police brutality against Egyptian youth.

"I particularly regret some that were written as part of online insult battles with the total disregard for how they read to other people. I should have known better.”

However, he has continued to like posts containing anti-Zionist rhetoric, including one which claimed the scandal was the result of a "violent Zionist planned attack” against him.

In response, Shadow Justice Secretary Robert Jenrick called on the government to "get this disgusting man out of our country now", while Reform UK leader Nigel Farage promised that, should his party win the next election, he will ensure el-Fattah is deported, even if it means changing the law to allow ministers to strip the activist of his citizenship.

However, Labour's Dame Emily Thornberry, the chair of the Foreign Affairs Select Committee, has told the BBC that any attempt to deport el-Fattah would likely fail in the courts as there is "not enough evidence" that he is a "threat to national security".

This threshold would have to be met in order to strip him of his citizenship, as happened in the case of former Islamic State member Shamima Begum after a lengthy court battle.

Meanwhile, Foreign Secretary Yvette Cooper has initiated a review into how civil servants failed to check el-Fattah’s social media before she publicly conveyed her own delight at his return - something she has since recognised "added to the distress felt by Jewish communities".

She said: “It is apparent not only that current and former ministers were never briefed on these tweets when they spoke publicly about this case in the past, but also that the civil servants in charge of this case were also unaware.

“I take this extremely seriously both to ensure we have accurate information and because of the deep distress this has understandably caused.

“It is clear that this has been an unacceptable failure and that long-standing procedures and due diligence arrangements have been completely inadequate for this situation, leading to the serious problem of successive foreign secretaries and prime ministers making public statements without all relevant information.”