The name of the agreement referred to in the question was the Munich Agreement. The term used to describe the policy and/or philosophy behind it was appeasement.
The British Prime Minister was Winston Churchill and the German Chancellor was Adolf Hitler.
One can find a list of British prime ministers by going on a website such as Wikipedia where it lists the prime ministers of Britain. There are also books on the prime ministers of Britain that can be found on Amazon.
There were ten British Prime Ministers that were lawyers. They were Adding ton, Grenville, Percival, and Canning. Disraeli Asfuith, Lloyd, Atlee and Blair were British Prime Ministers that were lawyers.
Neville Chamberlain
Margaret Thatcher was British Prime Minister in the 1980s.
A full list of British Prime Ministers is available on Wikipedia. See related link.
Winston Churchill would be one of the most famous British Prime Ministers.
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Canadian provinces do not have prime ministers - they have premiers. Gordon Campbell is the premier of British Columbia.
Churchill ( Winston) come to my mind. However, there have been several famous prime ministers.