The BBC confirmed that Caroline died on the 5th June. She was aged 72.
She appeared in Doctor Who in 1970 as Elizabeth Shaw, introduced as a scientist working for UNIT, who went on to join Third Doctor Jon Pertwee on his Earth-bound travels.
Steven Moffat described her as “a brilliant actress”. “She was not just a sidekick, but a scientist in her own right,” he said. “A match for the universe’s number one know-all.” Caroline first reprised the role of Miss Shaw in 1983 as part of the Doctors 20th Anniversary episode "The Five Doctors" and again in the 1993 BBC Children In Need special "Dimensions In Time".
She was also a mainstay of Big Finish Productions and BBC Audio soundtracks and talking books for many years...
David Parkinson of Big Finish Productions told BBC news: “She was a brilliant actress and a lovely, kind soul who was a joy to be around and who was interested in everyone. She will be greatly missed.”
R.I.P. Caroline John.
Tweets from past Doctor Who actors/actresses
Devastated to hear that the lovely, talented, wise and gentle Caroline John is no longer with us. So sad. Thoughts with Geoffrey and family.
KatyManning Official Nicola Bryant
just heard about Caroline John ! She was a dear beautiful soul .her humour &talent will be sorely missed xxxxxxx
Very sad news. A lovely one has left us. All I can say. :(