Thanks everyone for sharing your woes - it makes me feel a bit better about mine, so I'll reciprocate
One strong colony with nothing but drone cells - diagnosed by my mentor as Q- and drone-laying workers, rather then drone-laying queen, so beyond redemption
One weaker colony with nothing - no eggs or brood of any kind and could not find a queen
So it's been a bit of an action-packed few days. My mentor offered a frame of eggs, so that got inserted on Friday - a quick peek today looks like a rather small - but nonetheless hope-inducing queen cell. Ironically, of course, if they rear her she may struggle to find drones to mate with
Then today I shook out the drone-laying colony. Many of the flying bees returned to the other hive, but my mentor seemed quite sanguine about that. Set up the now empty (sob) hive in a new location and tonight installed a small colony from fellow BKA members who kindly offered one that they consider surplus-to-requirement
So hope springs eternal and all that; cross everything and hope for the best. The OSR over the hedge is just coming into flower, so if they feel like using that to build up brood rather than generate lots of tricky honey, that's fine with me