Hi
Thanks so much for the replies. Its really appreciated.
It looks very much like Paul Barcrofts work but the signature does not quite seem correct, I don't know how to contact him to see if he could confirm its by his hand.
The Penhaligans mark is a bit of a curveball as I can't see how it would be utilised in a perfumery context. Its very fine glass so I wouldn't imagine it would have been a receptacle for a product.
Cheers
Chip