By Eve Buckland For Mailonline.
Her son, Oakley, from a brief relationship with actor Reuben Purchase, was just 12 months.
Her family moved to his camp by the Gomote river.
Kate bought 2,000 acres in the Eastern Cape, where she plans to establish a conservation project.
At the National Theatre she performed in Pravda with Anthony Hopkins and played Sheila Birling in Stephen Daldry;s revision of An Inspector Calls.
As well as Sheila the series also starred her husband to be Denis Lawson and Brenda Blethyn in one of her early roles.