The vehicle behind the bloke on the left looks like a Jeep with a canopy.
The bloke on the left seems to be wearing 1937 Pattern British gaiters with perhap an overcoat in the American style, and holding perhaps a pad on his right thigh, as a journalist interviewing someone would do. Or maybe he is wearing and holding bomb disposal gear?
The bloke on the right is holding some largish gizmo, which might be a firing device or whatever that’s been removed from the rocket.
The bloke on the right looks like he’s wearing some sort of rubber or smooth boots, perhaps to minimize the risk of static eletricity firing a fuse? Did UXB people have such boots and, if so, when?
The bloke on the right is wearing his beret in the British style, close to the skull and pulled down on the right.