Britain's trade gap widened in May after exports slipped back from a rise in April, according to official figures.
Britain’s Office for National Statistics said the UK's deficit on trade in goods and services hit £2.3bn in May, growing from £2bn in April.
It said the UK's trade deficit on goods expanded to £9.9bn, up from £9.4bn in April, as the UK recorded a sharper fall in exports than imports.
It said exports in goods slipped £2.1bn to £23.7bn, while imports tumbled £1.6bn to £33.5bn in May.
The UK is looking to bolster its trade with the rest of the globe to help drive economic growth after voting to leave the European Union.
Economists predict British exports will rise following sharp falls in the value of the pound, which are making UK goods more attractive to overseas buyers.
Sterling slumped to a 31-year low on Wednesday, slipping below 1.28 US dollars for the first time since 1985 at one stage and also dropping as low as 1.16 euros.
The ONS said total exports fell by 4.4% or £2bn to £43.1bn between April and May.
It added that exports of goods to EU countries decreased by £0.3bn over the period, while exports of goods to countries outside of the EU fell by £1.8bn.
Howard Archer, chief European and UK economist of for IHS Economics, said: "With UK domestic demand likely to be pressurised substantially by prolonged, heightened uncertainties following the vote to leave the European Union in the June 23 referendum, one hope has to be that the substantially weaker pound will feed through to boost export volumes."
He added: "However, there is no guarantee that the markedly weakened pound will provide a major boost to UK exports. Furthermore, the UK's decision to leave the European Union will likely dampen European growth and could also very well have some global impact, which will hamper UK exports."