The atmosphere grew more frosty between the pair when Phillip accused the writer’s book of being “unverified”, as it did not have royal approval.
Following her appearance on the daytime TV show, Lady C’s son Dima Campbell tweeted out an extraordinary claim about Phillip.
Dima alleged that the This Morning star had pushed his mother at an awards ceremony.
On Twitter, Dima writing over a clip of his mother on This Morning, said: “I personally remember when you tried to shove my mother at the ITV awards. You hate authoritative women!”
A representative for Phillip Schofield has been approached for comment by Express.co.uk.