Simon Gray returns to soft drinks with IT’S GIVING - A modern functional soda built for everyday retail fter building one of the UK’s most recognisable functional drinks brands, entrepreneur Simon Gray is stepping back into soft drinks with a new mission: making wellness more accessible through everyday retail. Gray, founder of Boost Drinks, has launched IT’S GIVING - the first brand under his new business, Fizz With Purpose - marking what he describes as “functional drinks chapter two.”