Thorne, the equipment supplier, have been sending newsletters recently. The latest contains an interesting article about increasing the number of drones in a hive.
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.
A look at the weather at our nearest official weather station at Benson aerodrome shows that May has not been very nice so far.
There has been consistent higher pressure at around 1020 hectopascals. This hasn't been accompanied by late spring warmth. Day temperatures for the last week averaged 11.3C; night temperatures averaged 7.0C. The wind has been mostly consistent at around 8 knots.