SOME 100 extremists and their kids could flood Britain if jihadi bride Shamima Begum is allowed home from Syria.

It would be a huge strain on security services, sources told The Sun on Sunday.

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British-born Begum, 25, is living in a detention camp in Syria after she fled her home in east London to join I.S. in 2015.

The Tory government revoked her citizenship — but there are fears she could use Bashar al-Assad’s fall to launch a fresh bid to return to Britain.

A source said: “If Shamima is allowed back in it could open the floodgates to 100 others.

“The security services keep tabs on those people in Syrian camps with a claim to UK citizenship.

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“They pose a risk and would take a massive amount of resources to watch.”

Begum’s lawyer Tasnime Akunjee has said her hopes of returning have been “bolstered” after the fall of Assad.

The PM’s new Attorney General Richard Hermer — before he joined Keir Starmer’s government — said stripping Begum of her citizenship was “draconian”.

Of Begum’s citizenship, a Home Office insider insisted: “We won’t be overturning the decision.”

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The Home Office said: “Our priority remains maintaining the safety and security of the UK.”