In 1953, Healy joined the split in the Fourth International instigated by James P. Cannon and was soon nominal leader of the International Committee of the Fourth International.
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He then left to become one of the founders of the Workers International League, led by Ted Grant, Jock Haston and Ralph Lee.
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In 1974, some 200 members around Alan Thornett, then a leading militant in the automobile industry at Cowley, were expelled from the party.
The Orthodox Trotskyists suffered another split in 1973 between the Socialist Labour League (SLL) of Gerry Healy and the Internationalist Communist Organisation (OCI) of Pierre Lambert.
Wohlforth now claims that the Workers League became a cult, largely due to the domination and manipulations of the principal ICFI leader at the time, Gerry Healy.
Gerry Anderson | Gerry Marsden | Gerry Conway | Gerry Adams | Gerry Rafferty | Una Healy | Gerry Weber Open | Gerry Scotti | Gerry Goffin | Gerry Healy | Ted Healy | Healy (surname) | Gerry O'Connor | Gerry House | Gerry Embleton | Gerry Beckley | Gerry | Healy | Gerry Ryan | Gerry O'Connor (fiddle player) | Gerry Lopez | Gerry Leonard | Gerry L. Alexander | Gerry Finley-Day | Gerry Brownlee | Gerry Anderson's New Captain Scarlet | Randolph Healy | Patrick Francis Healy | Jerramiah Healy | Ian Healy |
Hamilton was for many years closely linked with Gerry Healy but, in 1971, she sided with Pierre Lambert and the French OCI Internationalist Communist Organisation when the ICFI split into two, ostensibly over the place of philosophy in Marxist theory, but equally about control of the ICFI after the OCI grew to be larger than the SLL in the late 1960s.
It was formed as a split from Sheila Torrance's Workers' Revolutionary Party in 1987 by Gerry Healy and supporters including Vanessa and Corin Redgrave.