A family member, who's not a UK resident or a British national, is planning to come visit me in the UK in January. He's been given two doses of Sputnik and one booster jab of Oxford-AstraZeneca.
Assuming the WHO doesn't approve the Sputnik vaccine before my family member travels, would he be considered as vaccinated or unvaccinated when entering the UK?
I cannot find any information around this scenario in the official GOV.UK website: https://www.gov.uk/guidance/countries-with-approved-covid-19-vaccination-programmes-and-proof-of-vaccination
As a side note, he won't be coming from a red list country.