One of the London Bridge terror attackers was allowed to enter the UK despite Britain's intelligence agencies being told he wanted "to be a terrorist".

Youseff Zaghba was placed on an international 'watchlist' of suspected foreign fighters after the Italian police caught him trying to travel to Syria last year.

The Italians claim both MI6 and MI5 were informed of the fears surrounding Zaghba, who told police he was "going to be a terrorist" when he was stopped at Bologna airport.