Award-winning journalist and former deputy editor of Elle Decoration, McKenna has also worked as an editor for Channel 4. Working extensively in the gay press he is known for initiating the campaign for gay law reform in the Isle of Man and leading the fight against Clause 25. He is the author of two ground-breaking books about male homosexuality and Aids in the developing world: On the Margins (1996) and The Silent Epidemic (1998). His debut biography, The Secret Life of Oscar Wilde, was published in 2003 to wide acclaim.