Paint the town green

This festival promises to be bigger and better this year, with lots of participation from London's Irish community and the backing of the Mayor's office. The parade (from noon) features floats representing the Irish counties, with local schools among the other entrants.

The route runs from Hyde Park along Piccadilly and Regent Street. Most of the party action takes place in Trafalgar Square, with live dance and music, a children's play area and craft and community stalls. The main stage features The Saw Doctors as headline act, plus Paddy Casey and Ronnie Drew.

Hyde Park & Trafalgar Square, W1 (020-7983 4100). Sun 13 Mar, noon-6pm, Saw Doctors concert from 3.30pm, free.