I don't know if its a UK company, I doubt it, its probably chinese, Ill look again tomorow and see if there are any clues to origin

Actually I already have some home made dimmer packs..... the problem to remember is that whilst its relatively easy to make a circuit board, you still have the problem of dealing with 240VAC (or 120VAC), sometimes we get all to happy playing with live DC circuit boards that we forget that when your playing with 240VAC you need to take a lot of special care.

For this reason I really prefer getting factory made units which have decent cases, by the time you have made a home-made unit safe it stops looking cheap.