I am running the London Landmarks Half Marathon to raise money for Crisis. I'm a Londoner born and bred and I love this city but it has many problems, one of which is the unacceptable level of homelessness. Crisis are doing brilliant work to try to change this and this is my attempt to make a small contribution.

Running wise, if you know me you'll know this is a HUGE challenge. At school I was always last in the running races (one time I was second last but only 'cos the girl who came last sprained her ankle... I only just beat her), have always been round and clumsy and with the coordination of a drunk walrus who just came down a helter-skelter. But my sister got me doing Couch25K and, with Sarah Millican calling me flower and pet in my ears, I completed it. Then I got badly injured so I completed it again and went on to run two 10Ks. But this is a big one (it's got the horrifying word 'marathon' in it, for pity's sake) and I genuinely don't know it I can do it. But I'm going to try...

All of which is to say: any support you can give will be gratefully received and very hard won! Thank you very much. Kat x