Checked the 3 QC on one frame today, one had emerged. So created 2 nucs with a frame of mainly sealed brood, 2 frames with pollen and stores and a QC. The emerged queen may have been on the remaining frames, so left in the brood box and placed in the following pattern on the QC raising colony.
Original colony in brood box,
crown board with side opening and bee proof mesh over holes
Queen cell raising brood box.
This would allow the new queen to mate and start laying in the top brood box and making a 2 queen colony.
I'm sure the nuc created two weeks ago is queenless, so if I get the chance I will place a queen cell with it, also because I don't know if the emerged queen is still with the top box I would give another QC.