David Walliams tells MailOnline what happened when he met the PM:

“Because I’m taller than him, I offered to stand on a lower step so we wouldn’t look odd together – he’s a tall man but I’m ridiculously tall.

He’s the Prime Minister so he should be the one who is most powerful-looking. He told me not to flick my hair like my character Sebastian, who flirted with the PM relentlessly.

And, of course, I immediately did it. It’s almost like I’ve got Tourette’s. When I’m told not to do something, I have to do it.”

Whatevah!