Hunnicutt died last Thursday at a hospital in London, according to her ex-husband Simon Jenkins.
She was 80 years old.
The duo moved to England, where her career took off.
Gayle HunnicuttGetty
They co-starred in two horror films, Fragment of Fear in 1970 and Voices in 1973.
That same year, she played opposite Roddy McDowell inThe Legend of Hell House.
After divorcing Hemmings in 1975, Hunnicutt wed journalist Simon Jenkins in 1978.
Jenkins was knighted for services to journalism in the 2004.
The duo divorced in 2009.
She also played Annabelle West inThe Return of the Saint.
