Britain’s new “full and comprehensive” trade deal with the UK would not have been possible without Brexit, according to former Prime Minister Boris Johnson.

Leaving the European Union gave Britain control over its own tariffs and its ability to negotiate trade deals with other nations, hence Johnson's insistence that the move has bolstered Britain.

Speaking to GB News, the former prime minister was coy on whether he deserves praise for the deal which many see as a major win for Britain.

“Brexit certainly is [responsible]”, he told Patrick Christys.

“We would not have been able to do this deal with the United States if we weren’t outside the European Union.

“That’s for ding-dang sure.”

Starmer has made securing a trade deal with Britain’s transatlantic allies a key priority amid fears Trump’s sweeping tariffs will have an adverse effect on the British economy.

Measures included a general 10 per cent levy on all UK exports and a 25 per cent charge on steel, aluminium and cars.

Some reports have suggested an agreement could see the UK cut some tariffs on US products and potentially make changes to the digital services tax, which hits US tech companies.