I had a look at both colonies this afternoon. The swarm is happily settled in, has stored some honey, and has a couple of frames of eggs. So that's looking good. They seem to have stopped buzzing me as well. The original colony (Hive No. 4) is still building up fast. They're moving up into the supers, where the honey crop's stored. They got a bit agitated while I was inspecting them, buzzing around my head. Not a good habit. Unfortunately, not many beekeepers make much effort to breed from the best queens, so you really are taking pot luck with swarms. I've had far worse! Both hives have been given a couple of frames of foundation to pull out into comb. It should do something to discourage Hive 4 from swarming, and it'll enable me to get rid of some of my nastier old comb.
I've also planted out some more peas; Victorian Purple Podded, Glory of Devon, and Lancashire Lad.