Gay Catholics from all over the country will be parading behind a 'Proudly Lesbian, Gay, Bisexual & Transgendered & Proudly Catholic' banner in the impending Pride London Parade.
In excess of 500,000 people are expected at the event in two weeks time, whose theme is 'Fairytales, Myths and Legends'.
The two week Pride festival, of which the parade is a part, uses theatre, music, debate, art and entertainment to raise awareness of discrimination and the issues and difficulties affecting the lives of LGBT people around the world.
Gay Catholics have decided to choose the parade event to proclaim the banner's message to other LGBT communities, as well as the rest of the Church.
Many will also be wearing 'Nobody knows I'm Catholic' t-shirts.
Catholic groups will also be providing information, advice and pastoral contact at a Trafalgar Square stall, shared between the RC Caucus of the Lesbian and Gay Christian Movement, Catholics for AIDS Prevention & Support, and the Soho Masses Pastoral Council.
The Soho Masses Pastoral Council is also holding to Mass on Sunday, 6 July at the Church of Our Lady of the Assumption & St Gregory, Warwick Street, near Piccadilly Circus, to which all are welcome.