Largecrowds are expected in central London today to support the cause of same-sexmarriage.
Organisersfrom the gay and lesbian community hope it will be the biggest same-sex rally everheld in the UK.
9,000 people are expected to turn out.
150 gay and lesbian support groups from all over the UK will be parading through central London.
The parade route runs from Baker Street, along Oxford Street and Regent Street and ending at Trafalgar Square.
More top news
An estate agent has been jailed after taking pictures of clients' bank cards while showing prospective buyers around their homes.
RMT members staged a protest outside Parliament to mark the anniversary of the first strike one year ago today.
The former mayor of Tower Hamlets, was forced to step down after he was found guilty of a string of corrupt and illegal practices.