The public appeal came a week before England is due to start unwinding its third Covid lockdown, with progress hinging on the vaccines' ability to curtail the pandemic.
NITI Aayog Member VK Paul said that 187 people have tested positive for the UK strain of SARS-CoV-2 in the country so far.
According to him, a paper on Covaxin’s neutralisation potential against the UK strain has been accepted for publication.
To a question on the demand for relaxing the local train timings for the general public, Tope said preventing crowds at stations is still the priority.
In the AstraZeneca-Oxford trial in South Africa, about 2,000 participants were given either two doses of the vaccine or placebo shots, according to the study, which has not been released.
Their close contacts have also been put under quarantine. Comprehensive contact tracing has been initiated for co-travellers, family contacts and others.
All passengers will continue to be required to fill in locator forms, with the fines in place for a breach in any of the lockdown conditions starting at 200 pounds.
In particular, one mutation, known as E484K, detected initially in South Africa and on subsequent variants in Brazil and Japan, has raised alarm among researchers.
Russia had suspended flights to and from the UK on December 22.
The ministry said progressive countrywide expansion in testing infrastructure has played a crucial role in the steep rise of testing numbers.
Comprehensive contact tracing has been initiated for co-travellers, family contacts and others, while genome sequencing on other specimens is going on, the ministry said.
Passengers will be subject to an immediate fine of 500 pounds if they fail to comply with the new regulations on pre-departure testing.
This is not the first time that the CM has made such an appeal, earlier in December, AAP government appealed to immediately stop flights from UK, after the situation got out of control in Delhi.
While it is natural for viruses to change over time and the variant is not believed to cause more severe symptoms, its "increased transmissibility", means it still raises concern, says WHO Europe.
England is facing a third national lockdown that will go on till mid-February, as authorities struggle to stem a surge in coronavirus cases that have left hospitals across UK overwhelmed.