Checked all the hives this morning:
Both the splits from Lloyd's hive had eggs and hence their queens must have mated properly and returned!
The queen right split will need a new box in a week or so.
The queenright split from the Observation hive was booming, so I gave them the second box.
The swarm from the observation hive had several queen cells (from the brood I gave them last Sunday) so I guess they didn't like the queen that came with them. Will check again within 3 weeks to see if they end up with a laying queen.
The OH queen started laying yesterday!
All is good in beeland.