I'm running the London Marathon this year for the charity Beat - beating eating disorders. Beat has helped many teenagers struggling with eating disorders, an issue close to my family. More money needs to be given to Beat in order to continue their amazing work, so please dig deep and give today.

I'm now 50 and marathons are starting to become too much like hard work so this is going to be the last marathon I run hard, maybe the last ever, and I'm trying to once again run sub-3 hours as a final flourish but will have to see what happens on the day.