Roz, have you got Angela's (this forum's owner) book Bagley Glass? An excellent resource for identifying this marque.
http://www.glass-time.com/orderbagleyglassbook.html
I can never bring myself to sell a piece of glass that I really like though - I'd just go onto bread and dripping for a week rather than do that 
Worth uploading your collection to Anne's GlassGallery (for GMB use) so we can all have a peek 
http://glassgallery.yobunny.org.uk/
Hi David and Pip,
Sorry I didn't reply to you both last weekend.

I had a recurrence of an ongoing health problem which means I have to stop what I'm doing and just gather myself together again. Having done that, I'm now catching up with outstanding stuff like replying to you both.
Pip posted a picture of a Bagley bowl and asked if mine was like it. It's not. My bowl is frosted green with fish and weeds all over, and the fishes' tails and fins make an irregular rim to the bowl. It's packed away at the moment, awaiting the long-promised finishing off of an extension, in which I will have proper display cabinets for my glass.
David asked if I have Angela's book about Bagley. I don't yet. I am buying books on glass on a gradual basis, out of the proceeds of my ebay sales. Once I have bought it, I may well find that the bowl I was sold as Bagley is not in fact Bagley!

Both have suggested I post pictures of my collectionon the Gallery. I promise that I will do so once it's all been unwrapped and sorted out. I have some small pieces around me, mainly the recent acquisitions, so I don't suffer withdrawal symptoms!
Once again, sorry I didn't reply last weekend. If I do go silent, it's because I'm having another little fight with my health.
Roz