The Queen's Guard, who usually never move or make any sounds, started screaming at this idiot But he yelled it in a broad Scottish slang which is hard to understand
'Get yersel' away, ye came and ye done this yesterday anaw, do him wan'
That translates as: 'Listen, get yourself away. You came and did this yesterday too. Do him one, turn the camera off'
Basically, "Get your F*CKING *SS OUT OF HERE you disrespectful dope."