I took a photo of a blue glass vase in a similar shape (as though someone had pushed down the neck into the body slightly if you see what I mean?) in the V & A I think. I think it was under British Glass, which is what made me look at my other pieces to find that foot (because I'm pretty sure that piece is Webb Corbett).
However ... much to my dismay, whilst I was at the V&A I was able to use their computer to search for glass under the museum code they had set next to each piece, but once I got home I found I was unable to do so! Really annoying as I carefully took pics with the numbers showing so I would be able to do so once home.
I'll try and find the picture and double check it was under British Glass.