Well, quite. Interesting snippet from the Guardian:
"In practice it is possible, and frequent, for members of the privy council to be appointed without meeting the monarch through a device known as an Order in Council, but is rare for a party leader to use such a course.
Corbyn’s office said...
Labour said it was not a snub and pointed out David Cameron took three months to be sworn in to the council. I say hang DC for being a Commie pig dog Queen hating pinko scum.