Hi Simon, I'm a bit confused about the Standard Drink (US) and UK Unit. The US std. drink contains 14 g. of alcohol, while the UK Unit contains 8 g. Then if 30 mL @ 40% = 14 g of pure alcohol and is one US Drink, then the same volume and concentration in UK Units would be 14/8 g of pure alcohol or 1.75 UK Units, rather than 1.2 units as indicated. Or is my math(s) erroneous?