How to keep cool on the hottest day ever recorded in the UK

Rafi had another 1 to 1 training session today, he is doing so well I am really pleased with him. It was also lovely to be in the dog barn for the session as it was so lovely and cool. Before we left I got him a cool coat which you soak then put on the dog just like any other dog coat but its so cool its lovely!
Straight after training we went to Therapaws for a swim. His third swim session and he couldnt wait to  get in. The first few times he went down the slope then as he grew more confident he went in from the side. It looked as if he was waiting for  the judges to score his dive, Bless him. I would have given him a 9.9 as it was a little splashy!