He entered the
House of Commons as the
Liberal Party Member of Parliament (MP) for
Wolverhampton East at the
general election in May 1929. He was a Liberal specialist on foreign policy between the wars, and was one of the first to take a strong stand against
Appeasement of the
fascist dictators, and was a crusader on behalf of the
League of Nations. During
World War II, he was
Parliamentary Private Secretary to Sir
Archibald Sinclair (later, first Viscount Thurso), the
Secretary of State for Air. He won a reputation in Parliament for his determined use of
parliamentary questions. For example, just over a month after the formal establishment of the
Peace Pledge Union on 22 May 1936, he asked the first of numerous hostile questions about it on 25 June 1936. Wolverhampton East was one of the last urban constituencies which the Liberals managed to hold against both
Labour Party and
Conservative Party opposition up to 1945. Mander was expected to be nominated
Chief Whip for the Liberal Party in the House of Commons, but he lost his seat at the
1945 general election, in the post-war Labour landslide. Considering that Labour had now replaced the Liberals as the main representative of the radical tradition in British politics, he joined the Labour party in 1948, and subsequently served as a Labour member of
Staffordshire County Council. Among many public offices, he was
High Sheriff of Staffordshire (1921), a
county councillor,
justice of the peace, and was made a
Knight Bachelor for public services in the
1945 New Year Honours shortly before his enforced retirement from Parliament. == Industrialist ==