thanks Fred, and another example of a Registrant not being the manufacturer - I wonder if you'll ever find an example of 290264.
I'm unsure of the full name shown in the lower right hand corner - the second word appears to read Billet, and their address looks to read ... 17 Keppel St., Russell Square (London), and rather quaint how the first 's' in Russell looks to be drawn in the antique C17 style similar to our modern 'f'.
Apologies - seeing that we appeared to have all the necessary details from both Fred's original post and the Kew pictures, I didn't go looking for the Register when I was at the National Archives - do hope this hasn't impaired our knowledge of these items.
Just my opinion of course, and appreciate this is an item from an unknown source, but in view of the British Board of Trade Registration then might it fit better in British Glass?