I am hoping that I am not being premature in saying that we seem to be winning the war with the cats.
Monday night was the clincher - Mrs RC had spent most of the day trying to make the garden cat-proof, but we were awake most of the night repelling invaders - at least 3 different cats, at one point 2 coming in at the same time.
Last night there were no invaders - a combination of having seen where the weak spots in our defences were (and fixing them yesterday) and perhaps the cats being traumatised by seeing me charging down the garden in my PJs (I think I was wearing them anyway) wielding a metal pole and screaming obsenities.
No, there are no photographs or videos! Some people! :-)