There is another side to the argument; Britain's responsibility for what her citizens do abroad.
To my knowledge Russia and Tunisia has written off thousands of their ISIS fighters by refusing them the possibility of returning home. Might seem like a problem solved domestically, but I think it's a dick move towards the local population in the Middle East who's now stuck having to try integrate them somehow.
There is another side to the argument; Britain's responsibility for what her citizens do abroad.
To my knowledge Russia and Tunisia has written off thousands of their ISIS fighters by refusing them the possibility of returning home. Might seem like a problem solved domestically, but I think it's a dick move towards the local population in the Middle East who's now stuck having to try integrate them somehow.