Police have arrested a number of protesters after a security alert during the Trooping the Colour Parade in London this morning.

The parade signals the start of the The Queen’s Platinum Jubilee celebrations and tv coverage caught a small number of protesters being pinned down to the floor by police officers after breaking through a barrier. The men were seen to be wearing plastic crowns and holding up placards.

Thousands of police are on duty in the capital this weekend, with a number of events taking place to mark this historic Platinum Jubilee weekend.

More soon.