Growing in the greenhouse

I found this wasps nest under the work bench in the green house. A big fat wasp had been buzzing me a lot and I watched her until I found this. It is very well built but only held on to the bench precariously. So when she goes into the nest it wobbles around, as it does when she moves around inside. The individual cells can be seen clearly through the entry hole and judging by the work she is putting in they are being used.
Fascinating watching all this but I am still going to get rid of it tomorrow.