Duff Kelly managed to swim a mile in the 37oF Serps water, whilst the air was only 33oF!!!! He has been training for this for a while, and he writes:
"Well I came down to London on Thursday night and was considering making my swim attempt on Friday but decided that if I died doing it, I would miss the Madness Concert and party Friday evening so I put it off until Sunday since I was up all night on Friday. It was 37F and air was 33F. I was in a bit of a state after it and was a bit concerned but thanks to Jane Murphy who reassured me and helped me recover, I am still here so far. Anyway, I know it's not the greatest achievement but it was a personal quest and feels good to have done it but my heart was not enjoying it as much as I was. "
To watch his video click here