British actor Sir Lenny Henry has questioned the lack of diversity in audiences at British festivals including Glastonbury, remarking that he is 'interested' and 'always surprised' by the apparent absence of black and Asian faces in the crowds.

The Comic Relief co-founder, who shot to fame as the first black performer on the controversial Black And White Minstrel Show, made the comments ahead of the release of his two-part documentary about Caribbean culture in Britain later this month.