UBS has upgraded its recommendation on Diageo from 'sell' to 'buy', increasing the price target from 2,300 to 2,920 pence, indicating a 19% upside potential. The broker anticipates a 3.6% growth in Diageo's US spirits sales for the first half of the year, contrasting with a 1% decline expected for the sector, and believes this growth will continue into the second half.