The value of goods and services moving to Northern Ireland from Britain posted annual growth of 7% in 2021, to reach a record £14.4 billion (€16.8 billion) in the first year of operation of post-Brexit checks, latest data showed.
Under the Northern Ireland protocol, the British-run region effectively remained in the European Union's single market for goods, given its open border with EU member country Ireland, as the rest of the United Kingdom departed last year.
Britain and the EU are currently in negotiations to try to ease checks introduced under the deal that meant more than 10,000 firms had to complete one million customs declarations to move goods to Northern Ireland from elsewhere in the UK in 2021.
While business groups have said the changes have added costs and delays for members, Wednesday's figures showed the value of purchases from the rest of the UK exceeded the previous pre-pandemic peak of £13.9 billion recorded in 2018.
Britain-Northern Ireland Trade
The value of goods alone moving to Northern Ireland from Britain also hit a fresh peak of £12.3 billion last year, up from the previous high of £11.4 billion in 2014, the Northern Ireland Statistics and Research Agency (NISRA) data showed.
The data showed the value of goods and services purchased locally by companies in Northern Ireland rose by 11% to £26.5 billion, while purchases from Ireland increased to £3.1 billion from £2.5 billion in 2020.
Sales by Northern Irish firms to the rest of the UK and the rest of the world also hit a fresh high.
The £12.8 billion worth of sales to Britain, which are not subject to checks, remained 10% below a 2016 peak while sales to Ireland reached a record £5.2 billion, up 24% year on year.