Have left the split (possibly swarmed) hive alone for a week as it has been grumpy as hell and may even have bothered another allotment member (unconfirmed).
Put in a few extra frames of foundation as i had run out, but still not happy. May feed it as not much going on in terms of drawing the comb. Others all quite happy, but we'll see if weather caught me out again this year.
Went to check on at another site (lovely nature, white marked – 2011? – queen I picked up in a swarm last year. They had a super left on over winter, much of which was used up, but while building up nicely, they have filled it in the last 10 days, so I got ready for an AS.
Had gone through and found nothing but playcups when I remembered there hadn't been a QE on this hive and there was a little drone in the super. Lo and behold, when I looked right in the middle of the super, there were a couple of charged cells, one with a 5/6 day old larva.
So, instead of closing up to check in a couple of days, I split them and left a couple of full brood combs of stores as I couldn't leave this super above the original hive. At least not without banging about the frames an perhaps damaging the QCs.
If I get a nice queen from the split and they are still docile, I may use her to produce more queens as she they are a pleasant bunch.