Bit of help from anyone in the know . I know that some makers fit extras to their diesel versions ,and I've got Alloys on mine . The boot sticker is a bit vague ,and the at new owner was a body repair place, where car was used ( AFAIK) as a courtesy car , so if it came with steels as standard, I can't see the firm changing them .Skoda kindly tell me that factory fit wheels were  6Jx14, which apart from the tyre size don't mean a lot . Looking at an old ad on e bay shows an identical wheel, so I'm wondering if these are factory fit .

They did do factory fit wheels on the diesels. Yes. Yours as probably from the factory.

Thanks - first time I've been asked this by insurance . Usual other questions are about ABS/Immobiliser .Starang as most have the performance ratings ,though it don't surprise me  .AF were good about it and noted them as facrory fit .