article_snippet: And in 2013 Mr Walliams led a UNICEF campaign with 100 schoolchildren, when Mr Walliams could not resist the temptation to touch the Prime Minister's hair.
article_snippet: Mr Walliams said later: 'Because I'm taller than Mr Walliams, I offered to stand on a lower step so we wouldn't look odd together -
article_snippet: Mr Walliams's a tall man
article_snippet: so Mr Walliams should be the one who is most powerful-looking.
article_snippet: Mr Walliams told me not to flick the Prime Minister's hair like my character Sebastian in, who flirted with the PM relentlessly. '
article_snippet: Mr Walliams could not resit flicking the Prime Minister's hair like Mr Walliams character Sebastian, an aide to the PM in Britain .
article_snippet: At last night's reception Mr Cameron said Mr Walliams had been researching Mr Walliams family history and Mr Walliams maternal grandmother's name was Llewellyn and Llewellyn grandfather was a tin plate maker from Glamorgan called Llewellyn Llewellyn. '
article_snippet: I think that's real Welsh heritage,' Mr Walliams said.
highlights_snippet: Walliams has been a frequent visitor to Number 10 in recent years .