The authority also added six more countries to the C category list including South Africa, UK, Portugal, Ireland and Brazil.
The category C international passengers now have to show Covid-19 report upon arrival and they will undergo another assessment of the virus in Pakistan, says CAA.
The 250 pound ($340) visa could attract over 300,000 people and their dependents to Britain and generate up to 2.9 billion pounds net benefit to the British economy over the next five years, according to government forecasts.
The company reported findings from a study that used blood samples from eight people, who had two shots of the vaccine, and two monkey and two monkeys that had also been immunised.
The results have not been published or peer-reviewed yet, but have been submitted to bioRxiv, which posts preliminary studies online.
Britain, an EU member for 46 years, voted to quit in 2016 and completed its tortuous journey out of the bloc on Dec. 31, when Brexit fully took effect.
The EU has 143 delegations, equivalent to diplomatic missions, around the world.
Brussels says "security cooperation can be suspended in case of violations by the UK of its commitment for continued adherence to the European Convention of Human Rights".
Once Nawaz's passport is cancelled, the legality of his stay in the United Kingdom becomes tenuous
The UK doesn't have an extradition treaty with Pakistan but once his passport is cancelled, it makes Pakistan's petition for Nawaz's deportation stronger