I put the a swarm from Helen into Hive F on the evening of 2nd May. I had a look at the entrance and the removable hive floor this morning.
The colony appears to be settling in well, despite the colder May weather. There is shed wax on the removable hive floor; there are bees coming and going. It appears that they've been building comb and orienting themselves to their new area. I didn't look for pollen, but I wouldn't expect to see it this soon anyway.