Still not your side of the pond but I can highly recomend this model
Underwater Lights - Lighting | Boating and RV. I had two on my last boat in blue and the boat before that green. They both attract fish at night but with the green the fish seem to just be in a relaxed mode where with the blue they seem to go a little crazy feeding on almost anything you toss in the water. In shallow 15m water even normally bottom feeding species rise to the surface ( water clarity dependant )
For night diving it's fantastic to swim up under the the boat and see the variety of fish hanging around the boat, even seals get in on the action catching the fish.