A reminder to others:
I had been watching them over the last fortnight showing signs of swarming. When I had looked at the hive around 10:00 in the morning there were very few flying so I didn't expect them to be leaving today, as the weather was not that bright.
I didn't see the swarm leave my hive, but noticed them buzzing around the back wall of the garden around 2:15 in the afternoon.
They spent about 15-20 minutes flying around the back wall before all went quiet again. I didn't see them fly off so I went into the field below my garden and found them in two separate clusters about 2-3 feet above the ground on a bramble bush. I was surprised by this as advice was to put bait hives 15 feet from the ground.
We left the box in the field until dusk and could see no more bees going in. Then we passed them back over the hedge and tipped them into Wendy's hive.