Complex sentence: Willink was made a Privy Counsellor in 1943, the year he became Minister of Healtha role in which he served until the Conservatives lost the 1945 general election.
Split into simpler sentences: Willink was made a Privy Counsellor in 1943, the year he became Minister of Health. Willink served in this role until the Conservatives lost the 1945 general election.