A very nice piece, back in 2002 I had a uranium green figurine just like the one on your lamp, mine had a Reg No on the base and the word FOREIGN.
Here is a copy of an email from Geoff Timberlake after a search of the records, in May 2002
Success! Your revised number was one of two taken out by L Cohen on the 4/11/1929. Unfortunately that is all the information I can find. I am certain that Cohen is not an UK glass manufacturer but is most likely an importer/dealer which would explain the FOREIGN part of the marking. I will put this information on Angela's Message Board.
Glad to have been of help.
regards Geoff Timberlake.
Still do not know who made this design.
This was posted as a topic by me on the old GMB sadly it crashed and we lost a lot of info
Tony H in NZ