From 1918 to 1950, and 1997 to 2005, it was a county constituency.

The county constituency was first created in 1885 from the southern part of Down.

This county constituency was first created in 1885 from the western part of Down.

The county constituency was abolished at the 1918 general election.

It was a county constituency from 1918 to 2010.

It was created in 1950 from the county constituency of Chertsey.

In the 1885-1918 period the area formed the county constituency of Coatbridge.

Only the largest county constituency of Yorkshire had more voters.

In 1918, the constituency was largely replaced by two new county constituencies.

The term "county constituency" was introduced in place of "division".