Former Barons and Baronesses

September, 1970 to April, 1976
March, 1978 to August, 1982
August, 1982 to January, 1983
January, 1983 to January, 1984
January, 1984 to January, 1985
January, 1985 to June, 1988
June, 1988 to October, 1988
October, 1988 to May, 1993
May, 1993 to May, 1995
December, 1995 to April, 1996
January, 2000 to July, 2001
July, 2001 to October, 2003
October, 2003 to January, 2004
January, 2004 to September, 2006
September, 2006 to April, 2010
April, 2010 to August, 2013