Factual error: On the England shirt, you can see the badge where the three lions logo should be. But it is not there. It is the badge the England Cricket team wear on the sleeves on their shirts. [I'm assuming that the FA didn't give permission for the three lions logo to be used, but it is still a mistake].
Visible crew/equipment: As Mike gets into the lift on his first day at the FA you can see the boom mike reflected in the mirror at the back of the lift.