Hi there. I came across this thread by accident, and I realise it is several years old, but this might be of interest to somebody.
My father was evacuated from St Malo to Jersey in 1940. He was in the RAMC attached to a Canadian regiment. Many years ago we were on a family holiday in Jersey and took a boat trip to St Malo, which brought my Dad close to tears. He told us that the order had been given for "wounded and medics only" to get in the small boats, and he said the Canadian soldiers were left behind, with a bagpipe playing, as the German tanks rolled into town. I took this to mean that they were taken prisoner, but I know nothing more about that. He never talked about it before or since that day, although he did talk quite a lot about his time in North Africa, Egypt and the Holy Land later in the war.
Hope that helps someone!