Officers set up the camera on a van in Romford, East London, which then cross-checked photos of faces of passers-by against a database of wanted criminals.

But one man was unimpressed about being filmed and covered his face with his hat and jacket, before being stopped by officers who took his picture anyway.

After being pulled aside, the man told police: ‚If I want to cover me face, I‘ll cover me face. Don‘t push me over when I‘m walking down the street.‘