Retailers have been urged to prepare their businesses for a no-deal Brexit.
The convenience sector has been told to consider the impact of trading environment, workforce, inflation and regulation ahead of the end of the transition period on 31 December.
A UK Global Tariff is expected to be applied to products from the European Union (EU) from 1 January 2021, and would result in higher prices.
The ACS has urged stores to begin notifying customers about this now by displaying posters in store.
In line with regulation from 1 January, tobacco products must also have printed EU health warnings. However, JTI told Better Retailing existing products can be supplied and sold “until stocks are exhausted”.