Constituencies – O
Part of the constituency archive.
Ochil 1997-2005
Ochil and South Perthshire 2005-
Ogmore 1918-
Okehampton 1660-1832
Old Bexley and Sidcup 1983-
Old Sarum 1660-1832
Oldbury and Halesowen 1950-1974
Oldham 1832-1950
Oldham Central and Royton 1983-1997
Oldham East 1950-1997
Oldham East and Saddleworth 1997-
Oldham West 1950-1997
Oldham West and Royton 1997-
Orford 1660-1832
Orkney and Shetland 1708-
Ormskirk 1885-1983
Orpington 1918-1974
Orpington 1983-
Osgoldcross 1885-1918
Oswestry 1885-1983
Otley 1885-1918
Oxford 1660-1983
Oxford East 1983-
Oxford University 1660-1950
Oxford West and Abingdon 1983-
Oxfordshire 1660-1885
Oxon Mid 1974-1983