18th

Hive L: This colony is not as vigorous as Hive R. There is no sign of nectar in the super yet. Destroyed a small queen cell cup. Removed spacer board and add eleventh frame of foundation one-in from the end.
I shall probably replace the queen in Hive L with a frame of good brood from Hive R.

Hive R: The colony is expanding rapidly! Lots of good sealed brood and a large number of workers. No sign of queen cells yet although quite a few drone cells. Removed spacer board and add eleventh frame of foundation one-in from the end. Super is coming on well with about 30% full of nectar already. They need to build up the rest of the super frames as the edges are not complete cells.
Then if there are still signs of swarming in Hive R I will do an artificial swarm into the new hive.

Hive W: Constructed a new deep brood box (bought from National Bee Supplies who I find make excellent quality hives) for the third hive.