Hi JohnI had exactly the same problem but it was resolved.
We needed a new flywheel which fortunately we were able to have replaced under the lifetime 7 year warranty as we had had the car from new.
Since then we have had no issues. Diagnostic checks show no fault issues.
Thanks for letting me know. So is it possible that I won’t need a new clutch and will only need the flywheel? Or do people have the clutch done at the same time due to the labour costs anyway? (Sorry i’m crap with cars and have no idea when it comes to the mechanics of them!).