This morning I lie in my bed trying to work out the consequences of some of my previous decisions.

Two days ago I saw an article in the paper about a 1000m tidal swim in the River Thames. Having nothing planned for that weekend I made haste for the phone and promptly “signed up”.

Now I lie in my bed on the morning of the race and have the following questions running through my mind. How cold will it be? Will I be able to see anything? How much diesel/toxic chemicals will I be swallowing during the race?

Half of me is excited whilst the other half is a little scared. I will reveal all in about 7 hours!