They are back in London. Both have had a number of engagements in the capital over the past week including Charles having returned to meetings with the PM and a Privy Council.
It seems that Charles followed the late Queen and went to Balmoral in late July and remained until after the second Sunday in October just as she used to do. Of course there was the break for the visit to France and Camilla also had an engagement or two in London.
Charles did a number of engagements in northern Scotland while up there which the late Queen rarely did. Sometimes she had no engagements for the best part of August and September (and not just in her later years but right from the beginning of her reign)>