This Act replaced the distribution of seats which had been enacted by the Redistribution of Seats Act 1885 and had been in use since the general election of that year. The number of seats was increased from 103 to 105 (and the number of constituencies increased from 101 to 103), with the enfranchisement of two additional universities. The revision was based on a report of a Boundary Commission carried out in 1917 taking population changes in the 1911 census into account.
