London Bridge terrorists caught on camera before the attack, joking and hugging as they planned their massacre.

The images show Redouane, wearing an Adidas top, place his phone in the street before the trio walk down St Luke’s Avenue.

They are off camera for ten minutes, and it is thought that his phone was left in the street to ensure they were not monitored.

Redouane later returns to retrieve his phone and the group share a joke.

Police officers are now probing the footage.

One of the terrorists – Butt – helped as an assistant at the all-Muslim gym Ummah Fitness which is where they are seen meeting in the images.

The gym is run by Sajeel Shahid, 41, who was part of hate preacher Choudary’s network which allegedly helped set up weapons training in Pakistan for the 7/7 murderers.

VIDEO: London Bridge terror attack: video of terrorists shot by Metropolitan police | Perth Now