1929 London Silver Makers Mark help needed

I have a cut glass vase / celery vase? with a 1cm silver rim around the top. I have identified it as London 1929 but am stuck on the makers mark - any ideas? Many thanks
silver close up 2.jpg

J H Worrall, Son & Co Ltd, “specialists in silver-mounted glassware for the toilet table”:

Many thanks - most grateful