Vials of the AstraZeneca vaccine are pictured at a COVID-19 vaccination centre located in Termini station in Rome, on March 8, 2021. (TIZIANA FABI / AFP)

LONDON - A senior European Union (EU) delegation representative was summoned on Wednesday to the British Foreign, Commonwealth and Development Office (FCDO) over a recent coronavirus vaccine row, a statement by the FCDO said.

"This morning a senior representative of the EU's delegation to the UK was summoned to a meeting with the Permanent Under-Secretary of the Foreign Commonwealth and Development Office to discuss the issue of incorrect assertions in recent EU communications," a FCDO spokesperson said in a statement.

The latest development came as Britain and the EU became embroiled in another row over the COVID-19 vaccine after Brussels accused Britain of blocking vaccine exports.

European Council President Charles Michel wrote Tuesday in his regular newsletter: "The United Kingdom and the United States have imposed an outright ban on the export of vaccines or vaccine components produced on their territory."

The latest development came as Britain & the EU became locked horns over the COVID-19 vaccine after Brussels accused Britain of blocking vaccine exports

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Michel did acknowledge the regional bloc had "put in place a system for controlling the export of doses produced in the EU". But he insisted the "objective" of these controls was to "prevent companies from which we have ordered and pre-financed doses from exporting them to other advanced countries when they have not delivered to us what was promised".

"The EU has never stopped exporting," Michel added.

British Prime Minister Boris Johnson, speaking at the British parliament Wednesday, said he wanted to "correct" the suggestion.

"We have not blocked the export of a single COVID-19 vaccine or vaccine components," he said.

"We oppose vaccine nationalism in all its forms", he said, adding that he would be "calling on all our partners to work together to tackle this pandemic".

British Foreign Secretary Dominic Raab is understood to have written to Michel to "set the record straight".

Raab has made clear that "the UK government has not blocked the export of a single COVID-19 vaccine or vaccine components" and that "any references to a UK export ban or any restrictions on vaccines are completely false," according to Sky News.

More than 22.8 million people in Britain have been given the first jab of the coronavirus vaccine, according to the latest official figures.

British Health Secretary Matt Hancock has confirmed that two-fifths of Britain's entire adult population have now been vaccinated and the government is "on course" to offering a first vaccine dose to all adults by the end of July.

READ MORE: Britain tells EU: Vaccine export curbs endanger virus fight

To bring life back to normal, countries such as Britain, China, Germany, Russia and the United States have been racing against time to roll out coronavirus vaccines.