The US Secretary of State, John Kerry, appears to bump his head on the door to Downing Street as he attempted to enter Number 10.
After turning to wave to the assembled media and not realising the door had shut slightly behind him, Kerry has an awkward collision with the famous door.
Looks as though there was a little miscommunication between himself and the door man.
Happens to the best of us, Kerry. Don't let it bog you down.
Kerry is in London to discuss the United States' relationship with the UK in the aftermath of June's referendum when UK voters opted to leave the European Union.