It's an enhanced toilet seat that has a small spray pump - you push a button and it does the cleaning for you. Hence no paper! And it might have incorporated a dryer and many other functions. http://www.hygieneforhealth.com/ could give you an idea
The regs don't generally deal with specific items of equipment - otherwise there'd be amendments every time a new bit of kit comes on the market, such as the fart-extractor Manrose have just brought out - rather they deal with generic items.
As an item of fixed equipment it will have to conform with the general rules for electrical equipment in bathrooms.
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