The move came as the European Union unveiled plans to transform its electricity system to rely mostly on renewable energy within a decade and increase its offshore wind energy capacity 25-fold by 2050.
"This is truly a great moment for Denmark and for the global green transition," Energy Minister Dan Jorgensen told a press briefing.
To reach a goal of 70% immunity in adults by the summer, the EU would need a sixfold increase in the rate of vaccinations.
"One euro that is spent on speeding up vaccinations (though infrastructure, increased vaccine production) could avert four times as many euros in losses," it said.
Those concerns were amplified after retail sales in Germany, Europe's biggest economy, plunged by more than forecast in December, according to data on Monday.
Against the dollar, the euro was trading at $1.2078, just above an early December low of $1.2056 the day before.
So far, the EU has allowed data, critical in industries like financial services, to move freely until June pending its consideration of longer term arrangements.
Brussels is reviewing whether to grant long-term clearing access, but in the meantime is piling pressure on euro zone banks to shift their derivatives clearing business from the LSE to rivals like Eurex on the continent.
The official, who declined to be named, said the postponement was due to a lack of clarity about the diplomatic status of EU representatives in Britain.
A British government source declined to comment on the postponement of Croisdale-Appleby's meeting and said the diplomatic status issue remained subject to negotiation.
"I think we need to make sure that the vaccine supply that has been bought and paid for, procured for those in the UK, is delivered," Gove told LBC Radio.
"But of course, we're always going to work with our friends and neighbours, we have to make sure that we can do everything we can to help them."
Britain, in lockdown since Jan. 4, on Wednesday clamped down on travel, requiring people arriving from high-risk COVID-19 countries to quarantine for 10 days and barring outbound trips for all but exceptional reasons.
The move has put a brake on a massive spending spree in Hong Kong by mainland traders looking to take advantage of relatively cheap shares in the city.