27 Sep 2018 --- Failing to reach a Brexit deal could end up costing £9.3bn (US$12.2bn) a year as food retailers and their supply chain face a mass of additional tariffs as a result of the UK not negotiating a trading deal with the European Union. A new report from Barclays calculates widespread disruption and price hikes with the “Hard Brexit” model forecast to create an average tariff of 27 percent for food and drink supply chains which is significantly more than the 3-4 percent levy that would hit non-food products.