“I don’t know if you remember the Queen Mother, she wasn’t seen in public towards the end, because she didn’t like to be seen – she wouldn’t use a wheelchair and didn’t want to be seen using a zimmer frame because she thought it was un-leaderlike and not regal.
“I suspect Her Majesty has got a similar sort of [thing], it’s not vanity, it’s a PR-type thing.
“You need to be seen as a strong leader, she’s always so powerful, she probably doesn’t want to be seen having mobility issues, in fact she has stated that.
“So, I think she’s picking and choosing her engagements so when she does an engagement she can boss it, pearls on, standing up and in style.