Uniformed border control officers have now become standard at Heathrow following an upgrade of immigration procedures.
The new uniforms of dark blue suits and light blue shirts, together with clearer signage, make it clear to arriving passengers that they are entering UK territory, say the Home Office.
We take a look at the new uniforms in operation in Heathrow's Terminal 1 and interview Brodie Clark, Director of Border Control, on their significance.