Photo shows troops being deployed in Westminster at the Houses of Parliament.

Prime Minister Theresa May warned that a second terror attack on the UK may be ‘imminent,’ after the Manchester bombing. 1,000 military personnel are patrolling Britain’s streets in response to the worst terrorist attack for over a decade and troops were seen filing into Parliament (main picture) and Scotland Yard (inset) this morning.

The Changing of the Guard ceremony has also been canceled today, the Houses of Parliament are closed to non-pass holders and tours have been stopped indefinitely. More news as it comes in.