KX started out life as Tesco Kick many years ago. It rebranded to KX only a couple of years ago and more recently it has undergone a new rebranding – completely snipping the Tesco own-brand image altogether. It’s made by Cott Beverages and now contains guarana. The taste has also changed slightly due to this recent rebrand, but still retains the KX characteristic sourness. It is another Red Bull clone and is quite a nice drink overall, and given the reasonable price in Tesco it is also good value.