The nobles' constituency of Niuas, as such, may have been established at this time.

The constituency was established in 1950, with the split of the Fylde constituency.

The constituency was established in 1950 as "Blyth", and renamed in 1983.

The constituency was established for the 1997 elections.

The modern constituency of Stirling was established in 1983.

For the Senate, 237 single-seat constituencies were established, even if the assembly had 9 more members.

At the 1997 general election a new constituency of East Devon was established.

The constituency was established for the 1963 national elections.

The constituency was established for the 1885 general election from part of the East Surrey constituency.

For the Senate, 237 single-seat constituencies were established, even if the assembly had risen to 315 members.