Seven years ago on the day that Alister Gates met his future wife, fizzy drink in hand, one of the first things she said to him was, "You're not going to drink that, are you?"
Intolerant to sugar, Gates' wife had spent years studying product labels and trying to eat sugar-free.
Gates quickly became a convert.
"Like the majority of people, I didn't even think about sugar content, but everything you buy in the supermarket has sugar added to it in some way. It's incredible," he said.
After studying the amount of sugar in bottled drinks, in everything from fizzy drinks to flavoured water and iced teas, Gates decided there was a market for healthy, sugar-free products that still tasted good.