FOUR Britons suspected of aiding Islamic State (Isis) have been hit with international sanctions, it was announced yesterday.

The four have been added to the United Nations list after being accused of recruiting Isis members and plotting terror attacks within Britain from Isis strongholds in Syria.

They have been identified as Omar Hussain from High Wycombe, Nasser Muthana from Cardiff, Aqsa Mahmood from Glasgow and Sally-Anne Jones from Kent.

Their passports would be “seized” in a domestic measure, they will be banned from travelling anywhere in the world and their “assets will be frozen,” according to a Number 10 spokeswoman.

The government submitted the names to the sanctions committee in a bid to deter others from joining Isis.

A fifth person is being considered for listing by the UN, with more names expected to be put forward in the near future.

The spokeswoman said: “David Cameron has been absolutely clear that we will do all we can to stop British citizens from going to fight for Isis and that foreign fighters should face consequences for their actions.

“It also sends a clear deterrent message to those thinking of going to fight for Isis.”

Some of the suspects are believed to be living in the Isis-controlled Syrian city of Raqqa. Two British militants were killed there in a secret — and likely illegal — RAF drone strike in August, Mr Cameron claimed earlier this month.

Ms Jones travelled to Syria in 2013 with her husband, Junaid Hussain, who was killed in a US air strike in August.

She is accused of using social media to recruit women to join Isis, but her account was suspended by Twitter yesterday soon after it was announced that she was subject to the sanctions.

Ms Mahmood also went to Syria to join Isis in 2013. She is thought to be a key figure in the female al-Khanssaa Brigade in Raqqa and is suspected of using social media to recruit for and support Isis.

Mr Hussain, who is also known as Abu-Said al-Britani, travelled to Syria last year and is also believed to use social media to recruit others.

Mr Muthana joined Isis in 2013 and appears to be involved in propaganda and recruitment videos. He is also reported to have threatened attacks on Britain on social media.