"Nio Cocktails UK" appears to be a legitimate business. It has received excellent reviews on Trustpilot, with a rating of 4.8. Customers have praised the quality of the cocktails, the speedy delivery, and the responsive customer service. The cocktails are crafted by expert mixologist Patrick Pistolesi, whose bar was voted the 19th best in the world. The company uses premium spirits produced by important distillers in the world. However, it's always a good idea to do your own research and check the most recent reviews before making a purchase.