Children are being urged to get on their bikes this weekend to raise money for leukaemia research.

A event is being staged at Heyford Park, near Bicester, on May 4, from 11am.

The event is part of a national fundraising drive, organised by television's programme Blue Peter.

More information is at www.bbc.co.uk/bluepeter/bikethon Last year about 20,000 children across the UK took part in the event, which is in its third year.