Answer:
Neville Chamberlain and Winston Churchill.
Step-by-step explanation:
Neville Chamberlain was Britain's prime minister during the beginning of World War II from May 28, 1937, to May 10, 1940, and then after Neville Chamberlain, Winston Churchill became the prime minister of the United Kingdom. Winston Churchill's full name is Sir Winston Leonard Spencer Churchill, and he was prime minster of Britain from 1940 to 1945 and then from 1951 to 1955.