1940 Newcastle upon Tyne North by-election

The 1940 Newcastle upon Tyne North by-election was held on 7 June 1940 after the seat became vacant when Sir Nicholas Grattan-Doyle, the Conservative MP since 1918, resigned. During World War II, major parties often avoided contesting by-elections due to an agreement, so the Labour and Liberal parties did not field candidates. The Conservative Party nominated Henry Grattan-Doyle as their candidate, but a faction of the local association opposed him, forming the Newcastle North (1940) Conservative Association and supporting Sir Cuthbert Headlam, who stood as an "Independent Conservative." Headlam had previously served as MP for Barnard Castle from 1924 to 1929 and again from 1931 to 1935, and had contested the Gateshead by-election in 1931. On a low turnout, Headlam won with 71% of the votes, securing the seat for the Conservatives until his retirement at the 1951 election.