Following the parade, events were held in three of the capital's squares: a rally in Trafalgar Square attended by guest speaker Ian McKellen, and entertainment in Leicester and Soho Squares.
The third new song is The Bells of Freedom, which served as the theme song of the 2008 Europride.
He created the role of Kevin in the original production of Patrick Wilde's What's Wrong With Angry? (2002) and went on to play the lead at Europride in Copenhagen.