Sorry for the delay, I wrote a reply on Saturday but it disappeared into the ether!
Many thanks for all the replies, very helpful. I don't need to cover lots of miles, so I'll probably get a petrol car.
I was really interested to see that the Mk3 doesn't have the boot/hatch split - to me that was one of the key features of the Superb. Being an FNG, I fell for the marketing blurb - on the Skoda Used Approved site, this 2017 hatch has the following in the description:
Electrically opening and closing tailgate/trunk lid (Tailgate/trunk lid electrically operated wo. Virtual pedal)
Notchback
Enough to fool a stupid person into reading this as the split boot/hatch 🫢
Anyway, I'll keep looking. Much as the earlier cars have a lot of merit, for simplicity I'll probably go for one of the newer cars. Thanks again for the responses, much appreciated.