While touring the UK in 1967, opening for Fleetwood Mac, Christine met John McVie, whom she later married.
She eventually left and replaced Peter Green in Fleetwood Mac. She was replaced by Paul Raymond.
In 1970 Stan Webb had a falling-out with Mike Vernon which resulted in the group being dropped by their record label. There were also disagreements within the group which resulted in the departure of Dave Bidwell and Paul Raymond who both left to join the famous London blues outfit Savoy Brown. Undaunted, Stan Webb continued with a new line-up which included bass guitarist John Glassock from Jethro Tull and Paul Hancox on drums but by the mid 1970's and after various other personnel changes, Chicken Shack finally disbanded.