Lenny Henry has poked fun at the beleaguered Canadian prime minister by announcing "I am Justin Trudeau", as he took to the stage at a television conference.

The 47-year-old politician has apologised after a yearbook photo surfaced of him in "brownface" make-up at a 2001 Arabian Nights costume party.

Justin Trudeau 

Comedian and actor Lenny Henry (61), speaking at a Royal Television Society (RTS) event, introduced himself as the Canadian PM.

"Nice to see you. I am Justin Trudeau. I'll be answering your questions any minute now," he said, to laughs.

Campaigning for diversity, Henry has previously called on lawmakers to guarantee true representation in UK film and television.

On Friday, at the RTS Cambridge Convention, he spoke about "what now needs to be done" in the industry.

Mr Trudeau asked Canadians to forgive him following the "brownface" controversy.

Time magazine published the photo of Mr Trudeau on Wednesday, saying it was taken from the yearbook from the West Point Grey Academy, a private school in British Columbia where Mr Trudeau worked as a teacher before entering politics.

It shows the then 29-year-old Mr Trudeau in a turban and robe with dark make-up on his hands, face and neck.