I can't imagine what it must be like for parents who have to watch their child be wheeled to surgery to have an eye removed in order to save their life. CHECT is a small charity making a huge difference to the children and families living in the shadow of this condition.

To raise money I'm going to stagger round 10k of Regents Park in 30 degrees of heat (if last year is anything to go by), telling everybody at the end how much faster I used to be. And I'm going to post a joke a day on my FB page for 30 days unless people pay me enough to stop.

Please give anything you can spare to this great cause.