John Ashdown-Hill has now finished updating his itinerary of Edward IV and this can be found at
Meanwhile, the Research Committee are looking to develop an itinerary for Richard III for the period 1452-1483, building on work by the late Lesley Boatwright, a much-missed former member of the Research Committee and a former editor of the Bulletin. The first draft of this will soon be on the Society's website. We would be grateful if you could send any additions to that version to the committee via firstname.lastname@example.org with as much detail as possible about the original source of your information.
(Belles Heures du duc de Berry f.223v, Wikimedia Commons)