Buckingham Palace said King Charles spend "a great morning" with British actor Idris Elba celebrating 50 years of the National Youth Music Theatre.

"The King popped in to join students, alongside Sir Idris, taking part in improvisation workshops, before watching a performance" from the students of National Youth Music Theatre (NYMT).

It said the "charity offers high quality musical theatre opportunities to young people from all backgrounds."

The palace said "with support from The Kings Trust, Sir Idris attended the National Youth Music Theatre, aged 18. "

Last year, Elba, who is known for his roles in the television series "Luther" and "The Wire", was awarded a knighthood for his anti-knife crime campaigning with young people.