Hudson sprayers, half a mile down the road from me, they used to sell a lot of sprayer on eBay but the last time i drove past thier unit it was all boarded up so they might have gone bust, (or maybe moved premises)
the one thing about Nemisis or M-power I wouldn't use it if I worked alone, my helper sprays it down then scrubs the carpet to death, while I'm setting up the pipes.