You can check out his site
Foreign power adapters and overseas voltage converters available from Lashen Electronics They have power adapters for UK. However this is just a bubbler and a drip system in one almost just like my drip system. You can make it for much less and get the air and water pump for your voltage, so no extra cost. Don't get me wrong it's a nice little system. I could get 3/4 to a pound out of my drip system and a 1000wat hrtilux bulb, AC, Dehumidifier in a 4x4x8 foot room. Throw in an airstone and I had the same. Do a search for do it yourself systems here and save a lot of pounds. check out this system, throw in an air stone and same thing.
10 Gallon Drip System. It's what I started with. Or you can get an air pumpand water pump for your voltage to put on that system . Cheaper than converter mate. Hope this helps and does not confuse too much. Many here will help you build a system. Hydro is the way to go. Just want to save you some bucks, I mean pounds.