They departed only after being deselected, which made them ineligible to stand for the party at the general election in May.
He had previously stood for the party in various Welsh Assembly seats.
He stood for the party in the first ever elections to the European Parliament in 1979.
He stood for the party in Northumbria at the European election, 1994, taking 4.2% of the votes cast.
He stood for the party in the 2004 European Parliament elections.
Dozens of senior officers had recently "retired" to stand for the party.
Alexander stood for the party in the Hemsworth by-election, 1996, taking 157 votes.
Hamilton's parents were both members of the Liberal Party and his father stood several times for the party.
After all, he's done it before, having stood for the Libertarian party in 1988.
He stood for the party in the 1993 and 1998 presidential elections, never managing 1% of the vote.