Following the UK's withdrawal from the EU, the Department for International Trade is consulting on the UK default tariff rates as of 1 January 2021. These tariffs – to be called "the UK Global Tariff" regime – will apply to imports from major economies including the US and China (subject to any new trade agreements), and may also apply to imports from some countries with which the EU currently has preferential trade agreements, such as Canada, Japan and Mexico. If the UK is unable to agree a trade deal with the EU before the end of 2020, the tariffs will be imposed on imports from the EU in addition to new checks on the UK-EU border.
If your business imports goods from exposed economies or in tariff-sensitive sectors, you should consider taking part in the consultation. The deadline for responses is 5 March 2020.