Hi Dilwyn,
Sorry I was so cynical. I must say I realised the site was yours after the editing window had expired, and was wondering how you'd respond. Where's a foot in mouth smiley when you want one

Thank you for explaining your reasoning for the identification. You're right, as with so many areas of antiques, experience is key.
I do wish more glassmakers marked their products though, particularly when they make something as beautiful as this vase!
Thanks again,
Adrian