Thanks for the replies guys. That all makes a lot of sense.
I opened the hive again and removed the secondary comb and then put the frames back at the correct spacing. There was a lot of capped brood an I could see many eggs and larvae. I'm guessing the population will start to ramp up once the brood starts to hatch.
I'm feeling a lot more confident on identifying drones from workers although the queen is still a hard find at times. Attached is a picture with what I am pretty sure is my queen (top left of the frame). Any idea on what species I have?
A lot of pollen going into the hive and a very strong honey smell can be noticed from several meters away. I was able I try the first honey, or at least strong nectar that was stored in the wonky comb I removed. It was very good. I think I am thoroughly hooked on this beekeeping caper.
The swarm trap at my friends house is still getting a lot of interest from scout bees and 10-20 can be seen around the entrance at any one time but the swarm still hasn't arrived from my friends observations. Any idea how long after strong scout activity you could expect a swarm? It's going to be close to 30 degrees C today with no wind so it might be good swarm weather.
Thanks for all your help so far.
Joe.