Wouldn't it help if the authorities in Pakistan acted in a positive manner if they seem to know so much about the activities of certain UK residents when the latter are in Pakistan?
I mean, if these would-be terrorists are up to no good in Pakistan, why wait until they're back in the UK, THEN tell us?
It's a bit like shutting the gate after the horse has bolted! Plus, it's also putting the onus on the UK authorities to do something to people who may not have committed any offences here, but who MIGHT?
Septic Peg 'ere: Pass me me crystal ball, please!!
P.S. Internment NOT the answer !!!