Premise: Rubicon Drinks Ltd (formerly Rubicon Products Ltd) is a soft drink manufacturer based in Milton Keynes, UK. The company specialises in exotic soft drinks, and produces a variety of different flavours of drink, many of which contain sugar or artificial sweeteners, and which come in both still and sparkling varieties. In the United Kingdom, their drinks are bottled and distributed by A.G. Barr plc.
Hypothesis: Rubicon Drinks Ltd makes the most popular soft drink in the UK.