Interested to see LDY-STN on this list...I think I'm correct in saying that you can only normally book these types of codeshares as part of a wider itinerary on BA (i.e. they wouldn't normally sell a BA code as a standalone on a Loganair point to point), but neither LDY nor STN are otherwise on the BA network, so perhaps that could be bookable on its own and get TPs etc - which personally would be quite useful!