That's great JohnPhilip, yes they're much thicker. I've got five of the top ones, and that ties in as the main part of this collection seems to be Whitefriars.
AND Nic, thanks too , aren't Durand and Arcopal normally marked 'though? These have nothing. I'm attaching another photo of the whole group of these. They're really strange in that the colours - especially the blue and green ones - are smeary iridescent.
AND thanks Anne for moving the topic for me, and I hope you don't mind but I have six others I can't identify and rather than keep taking up new topics I've added them below. On the first photo (of the three larger ones on their own) the middle one is marked ENGLAND, the second photo shows all six. Hope this is ok to add them here?