Armed police descend on London common as man and a woman are stabbed

Armed police descend on London common as man and a woman are stabbed as volunteers give first aid to bleeding victim on shop floor and officers arrest suspect

Two people have been stabbed in London tonight, police said. 

A man and a woman were attacked in Clapton Common, Hackney. A man has been arrested by officers and taken to a nearby station.

The two victims have been taken to hospital.

A cordon remains in place.

More to follow.