Progressive Unionist Party was created in 1979.
National Progressive Unionist Party was created in 1977.
Vanguard Unionist Progressive Party was created in 1972-02.
Ulster Progressive Unionist Association was created in 1938.
UK Unionist Party was created in 1995.
Liberal Unionist Party was created in 1886.
Protestant Unionist Party was created in 1966.
Scott Hislop has written: 'The development of the Progressive Unionist Party in context of the contemporary peace process' -- subject(s): Progressive Unionist Party
United Ulster Unionist Party was created in 1975.
Unionist Party - South Africa - was created in 1910.
Ulster Unionist Coalition Party was created in 2007.
Ulster Popular Unionist Party was created in 1980.
Democratic Unionist Party was created on 1971-09-30.