On an impulse for fun things to do in 2012, I stupidly signed up to do the Great London Swim. It is a mile in the Royal Victoria Docks, which my bro has kindly joined me in the challenge, to create Team Sharky and George!

There's likely to be face paint, costumes and general innuendos and a great day to hopefully raise a lot of money for a fantiastic cause.

Me and Rich are swimming and raising money for Macmillan Cancer Support. They are a source of support, helping with all the things that people affected by cancer want and need. It's not only patients who live with cancer, they also help carers, families and communities. They guide people through the system, supporting them every step of the way. They fund nurses and other specialist health care professionals and build cancer care centres. But they give so much more than medical help.

People need practical support at home, so they provide anything from some precious time off for a carer, to a lift to hospital. People need emotional support, so they listen, advise and share information though their cancer support specialists, website and trained professionals. People need financial help to cope with the extra costs cancer can bring, so they give benefits advice, and grants for anything from heating bills to travel costs. Together they listen, they learn, they act to help people live with cancer.

So please dig deep and donate now.