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Fish Harvest Festival, St Mary-at-Hill Church, Lovat Lane, London EC3 (0171-626 4184) tomorrow 11am, free

St Mary-at-Hill is the parish church for Billingsgate fish market and for this event they decorate the church with every conceivable kind of fish. "It looks beautiful," says a spokeswoman, "but the next day we do tend to wonder whether we will ever get rid of the smell."

Borough Market Family Days, Borough Market, 8 Southwark St, London SE1 (0171-403 7400) today 12pm-6pm and tomorrow 12pm-5pm, free

London's oldest fruit and veg market (left) hosts a children's circus, disco, funfair and numerous music and art workshops.

Poetry Workshop, Borders, 203 Oxford St, London W1 (0171-292 1600)

Every Saturday this huge book, music and video store holds free kid's workshops on the second floor. This weekend there will be poetry readings and children will be encouraged to create their own rhymes.