London's St Patrick's Day Parade

Irish Olympians and Paralympians are joining one of the world's biggest St Patrick's Day celebrations in central London.

Boris delighted with Irish celebrations

The Olympics-themed parade runs from Piccadilly to Trafalgar Square where there is live music.

High-jumper Deirdre Ryan and boxer Kenneth Egan, who have qualified for the Games, are among those joining.

There are 220,488 Irish people living in London according to the last census.

Mayor of London Boris Johnson said: 'I'm delighted to once again be backing London's St Patrick's Day celebrations.

"That they are amongst the biggest outside Ireland reflects the longstanding contribution of many generations of Irish people to London life."