Northern West Riding of Yorkshire - UK Parliament constituency - was created in 1865.
Yorkshire West - European Parliament constituency - was created in 1979.
Yorkshire South - European Parliament constituency - was created in 1979.
Yorkshire South West - European Parliament constituency - was created in 1979.
Eastern West Riding of Yorkshire - UK Parliament constituency - was created in 1868.
Southern West Riding of Yorkshire - UK Parliament constituency - was created in 1865.
Down - Northern Ireland Parliament constituency - was created in 1921.
Mourne - Northern Ireland Parliament constituency - was created in 1929.
Iveagh - Northern Ireland Parliament constituency - was created in 1929.
Enniskillen - Northern Ireland Parliament constituency - was created in 1929.
Bangor - Northern Ireland Parliament constituency - was created in 1969.
Larkfield - Northern Ireland Parliament constituency - was created in 1969.
Londonderry - Northern Ireland Parliament constituency - was created in 1921.