An Elstree-based charity is inviting people to give blood at a donation session it is hosting at Clore Shalom School in Shenley on Sunday. The Joely Bear Appeal, which supports research into child cancers, has organised the session, between 10am and 4.30pm. The school is in Hugo Gryn Way, Shenleybury. For further information phone the National Blood Service on 0845 7711711.