Two innocent members of the public have died after a knifeman went on a rampage this afternoon in London. 

Armed police shot dead a knifeman wearing a fake suicide vest today after he stabbed up to five people in a shocking terrorist attack as frightened crowds fled the scene.

Witnesses on the scene said the man had been brandishing two knives and had attacked people on the north side of London Bridge before running into the centre at around 2pm. 

This evening Met Police crime commissioner Cressida Dick praised the members of the public who helped and said counter terrorism is working around the clock to identify those who have lost their lives, working to understand 'what has happened and if anyone else was involved'. 

Dramatic video footage showed the knifeman being tackled to the ground by at least six heroic members of the public. One man chased the attacker with a fire extinguisher while one also held a Narwhal whale tusk up at him, which he is thought to have achieved at Fishmongers' Hall.