Diageo’s Johnnie Walker is once again the bestselling whisky from Scotland with 23% of the poll naming it the house pour.

We’ve been running ­the Brands Report since 2010 – the year after Agile Media launched ­the World’s 50 Best Bars – and, while it has evolved since then, taking in new categories and drawing data from an ever-rotating panel of bars, it still seeks to answer the same question. Which brands do the best bars buy – and why?