I would think the number is over the half million, I know its a unusual comparrison, both my sons are dj, one a wedding dj doing over 100 weddings a year, and the other a nightclub dj, been to a trade show a few times for the day and did a survey and there is over 250,000, yes a quarter of a million dj in the uk.
With population of 60 million population, and 100 of thousand commercial properties, could it be a million
idealrob