John George Hancock (15 October 1857 – 19 July 1940) was a Liberal and sometimes Labour Party politician and Trade Unionist in the United Kingdom.
Hancock held the seat and managed a slightly reduced majority; In 1909, he was one of a group of Miners Union sponsored Liberal MPs who were instructed by the Miners Federation of Great Britain to take the Labour party whip in the House of Commons and stand at the following election as Labour party candidates.
Relations between the Labour and Liberal parties deteriorated after 1910 and they were expected to field candidates against each other in some cases at the next election, anticipated to be in 1915.
However, he was defeated at the 1923 general election by the Conservative Party candidate, Herbert Wragg.
In 1927, following the General Strike, there was a split in the Nottinghamshire miners and Hancock followed the Association's General Secretary and Labour MP, George Spencer in the creation of the more moderate Nottinghamshire Miners' Industrial Union.