I was absolutely sure that I had courgette sees left over from last year: I only sowed two seeds, and there must have been more than that in the packet. Nevetheless, there was no sign of courgettes in the seed box when I looked.
I’ve now ordered a replacement pack. It’s a sad state when the postage costs as much as the seeds! I’ve gone for “Soleil” again, as it was a success last year, with a genuinely compact bush habit, tasty yellow fruit, and quite prolific. I’m giving up on green courgettes, as they never do quite as well here, though I’ve tried several varieties.