This Saturday, rather than watching X Factor & twittering about it, I've decided to do something useful and for a good cause.

I'll be swimming front crawl in the Guildford Spectrum swimming pool for two hours, and I'll be doing this in aid of a local Guildford charity, called Cherry Trees, which looks after children and young people who have a learning disability and/or a physical disability.

I need your help with sponsorship, but offer an incentive! The person that correctly guesses the amount of lengths I can do in those two hours, has the option of winning 15% of the total money I raise. Ooh!

Here's some more info, and a few clues..

a) I'll be swimming in a 25m pool
b) I'll be trying to swim as far as I can, without stopping
c) Previous times for a few long distance events : 750m 12mins, 1500m 25mins
d) Should you guess correctly, you don't have to accept the 15% of total money if you don't want to.
e) Count of lengths is final.
f) If you need more info, get in touch.