After the fall of the government, Wedgwood publicly criticised MacDonald's leadership and Labour's reliance on civil servants. He sat on Labour's front bench in opposition, speaking on, amongst other policy areas, local government, where he encouraged Clement Attlee. He was not offered a position in the second Labour government. In March 1929, he became chairman of the House of Commons Records Committee. He began compiling a history of the Commons, a subject that consumed his interest. He wrote a history of Staffordshire's parliamentary representatives from the thirteenth century to the First World War, and two volumes of biographies of MPs of the 15th century. Wedgwood's work in this area led eventually to the establishment of the History of Parliament Trust. Throughout the 1930s, he continued to speak in the Commons on issues of importance to him, particularly the Single Tax and native resistance to colonialism. In 1930 and 1931 he was made Mayor of Newcastle-under-Lyme after successfully campaigning for the town to remain independent of Stoke-on-Trent.