Free water from the bar tap? Get the app | Letters

Guy Hodgson has a tech solution for reducing the amount of plastic drinking bottles we useI can quite understand why people feel awkward asking for tap water without making a purchase (British embarrassment over asking for tap water in bars fuels plastic bottle waste – survey, 11 May). Fortunately, the Refill app from refill.org.uk will help direct people to all sorts of lovely businesses who have made clear their commitment to plastic waste reduction. They will refill with no obligation t