I didn't catch any of the Ronnies performances (not sure why - maybe it was heavily booked up?) but I did catch the performance during this stint at RFH as part of the Capitol Jazz Fest 'Bird' Tribute. I agree, he was in excellent form!
It was due to be held in the Ally Pally but it burnt half way through the Fest due to a fire under the organ so was rescheduled last minute to the RFH !