He is leader of the UK Conservative party.
He was the leader of the Liberal-Conservative Party.
Steven Haper was never leader of the conservative party. It's current leader is Stephen Joseph Harper, and he became leader of the conservative party on January 12, 2004
Margaret Thatcher became Leader of the Conservative Party on the 11th February 1975.
He has always been the leader of the Conservative Party of Canada, since its creation in 2003 to present.
The (British) Conservative Party
Conservative.
Benjamin disraeli
David Swann, leader of the Liberals
Stephan Harper > Conservative Party
Iain Duncan Smith resigned as leader of the Conservative party in October 2003, having been the party's leader since September 2001. Michael Howard became the next leader of the Conservative part from November 2003 to December 2005.
In Canada, the federal Progressive Conservative party no longer exists. It merged with the Alliance party becoming the Conservative party.