I added second deeps to both nucs today. I didn't go through the hives to look for the Queens, but I saw some young brood and larvae and that was enough for me today. Just too hot for a detailed look!
Before today there were 2 supers on the single deeps (over a queen excluder). So before adding the second deeps I removed the excluders in order to give the bees easier access to the supers for drawing out comb and filling honey! I don't think the Queen will cross the empty deep frames and move into the super, well not before harvest anyway.
So all I need now is to just get new stands, bottom boards and top covers on these hives and the apiary will be looking very nice indeed!