Due to the rapid expansion, the town of Milton Keynes, the Boundary Commission for England exceptionally recommended in 1990, between reviews, that it should be divided between two new constituencies.
This recommended a number of changes in order that the populations of constituencies ordinarily varied no more than 25% from an electoral quota.
The Representation of the People Act 1918, in addition to finally enfranchising women, provided for a redistribution of seats with the aim of equalising electorates, particularly where these had changed significantly since 1885.
The Redistribution of Seats Act 1885 disenfranchised boroughs with populations of less than 15,000, while several large towns and counties were subdivided into single member constituencies.
The Reform Act 1867 disenfranchised the remaining boroughs with populations under 10,000 and subdivided some county constituencies.
Apart from a few special cases in the 16th century and the temporary redistribution of constituencies for the First and Second Protectorate Parliaments in the 1650s, no borough was disenfranchised until Grampound.
They were seldom, if at all, represented afterwards, until restored to the list of those regularly in receipt of writs of summons in later years.
They were seldom, if at allm represented afterwards, until restored to the list of those regularly in receipt of writs of summons in later years.
Some boroughs originally included in the 1295 parliament were restored to the list of those always summoned in later centuries or the same name was used for a constituency after 1832.