Mr Kay said: “There were some quite senior figures at Buckingham Palace that wanted no Camilla at all, ever.”
Ms Juror added: “It was absolutely vital that his [Prince Charles] mother should accept her.
“It was also absolutely vital that the British public should accept her.”
Royal commentators, Robert Jobson and Katie Nicholl have also discussed the Queen’s initial relationship with Camilla.
Queen Elizabeth II is Prince Charles’ mother
Robert Jobson, Royal Editor of the London Evening Standard, told Channel 5, Camilla was initially viewed as a threat to the “security of the monarchy”.
Mr Jobson said: “If you actually look at the two women, they share an awful lot of similarities.
“Both are country women essentially, they both love horses, they share a passion for the countryside.
“There are a lot of similarities that they would always personally get on.
“But I think prior to the growing acceptance for the Prince of Wales to marry Camilla, of course, the Queen, wearing her hat as monarch, would have a problem with what that could ultimately mean to the monarchy, and to the security of the monarchy.”
Vanity Fair Royal Editor Katie Nicholl told Channel 5 the Queen’s relationship with Camilla has slowly changed.
She said: “This has not been an easy relationship.
Camilla and Prince Charles’ relationship timeline
“In fact, this wasn’t a relationship that she had endorsed at all.
“But time had moved on, the situation had changed and she gave them her full backing.”
Prince Charles and Camilla got married in April 2005.
It was the second marriage for both, with Prince Charles having previously been married to Princess Diana.
Source: EXPRESS CO UK