Here's a picture of our patio after all the Episyron rufipes activity.
I've also added photos of both the prey spiders I collected - both paralyzed and not dead. I've examined them under the microscope and confirmed that they are both Nuctenea umbratica. I've euthanised them so they don't have a drawn-out death.

Episyron rufipes burrows, Christophstal September 2026

Nuctenea umbratica, Female, Christophstal September 2026

Nuctenea umbratica, Female, Christophstal September 2026

Episyron rufipes, Christophstal September 2026

Episyron rufipes, Christophstal September 2026
The wasps I spotted on Thursday excavating a nest in the sand between our paving stones have been busy today. I found another spider on the patio, the same species as on Thursday, Nuctenea umbratica, with one of the wasps frantically attempting to dig a hole big enough to accommodate it. It gave up again, but we now have holes all around our patio (some of them must have been successfully completed). I watched one of the wasps for a while and it kept returning to a particular plant on some steps - which must be where the spiders are being found. Having taken these new photos, I've identified the wasps as Episyron rufipes.
I spent the morning picking plums from our plum tree. It's been yet another bumper year - probably the best ever. I managed to disturb this Oak Bush Cricket from the plum tree - it's a rarely seen but common species as it lives at the top of trees.
On our patio, I noticed a small wasp digging frantically in the sand between the paving. Nearby was a large spider (much bigger than the wasp). It looks like the wasp had paralyzed the spider and was trying to put him in a sand burrow with an egg. Unfortunately, our paving is too close together to fit such a burrow and the wasp eventually flew off leaving the spider for me to collect. I'll aim to stick it under the microscope to confirm its ID. When I get time, I'll also upload a video of the wasp digging.
I managed to get the moth trap out in the evening. I had one new species, a square-spotted clay. To be honest, I'd never have got an ID on such a worn specimen, but AI managed to ID it with 100% certainty. Also in the trap were a couple more box-tree moths (second generation?), one of which was the rarer melanic dark form.

Oak Bush Cricket, Christophstal September 2026

Nuctenea umbratica, Christophstal September 2026

Square-spotted Clay, Christophstal September 2026

Box-tree Moth (melanic), Christophstal September 2026