This is Nuctenea umbratica
the Orb-Weaving Spider who Lives in the Shadows.
The shadows we found it living in were under a slate in the polytunnel.
We too are living a little in the shadows, keeping out of sight while things go a bit dark outside.
Fortunately we have our own supply of sunshine:
Meanwhile our “turn stuff into trees” project has brought us nearly 500 tree and hedging plants.
The project continues and if you want to turn any money into trees the place to look is