In 1999 Peter Blake (artist) (designer of the Beatles' "Sergeant Pepper" album cover) used a Denis O'Regan picture of Freddie Mercury in his design for the Royal Mail's Millennium first class postage stamp. His photographs of Queen band members Freddie Mercury and Brian May also graced Royal Mail stamps released in 2020. O'Regan received a dedication from UK 'lad lit' writer Tony Parsons in his Punk eulogy 'The Boy Looked at Johnny', and features in diverse biographies and autobiographies including "The Fun Starts Here" by 'Mrs Geldof' Paula Yates. One of Keith Richards' favourite O'Regan photographs - a live shot with Charlie Watts - is featured in Richards' 2010 autobiography "Life".