The Redistribution of Seats Act 1885, coming into effect at the 1885 general election, reduced the representation of the parliamentary borough to a single MP. The single-member Reading constituency continued to exist until it was split in 1950 into the separate constituencies of Reading North and Reading South. These two constituencies were merged back into a single Reading constituency in 1955, but again split apart in 1974; despite its name, the 1955 constituency contained only ten wards of the County Borough of Reading. Today the area formerly covered by the Reading constituency is within the constituencies of Reading East and Reading West.