"We're not planning to have a passport in the UK," Nadhim Zahawi told the Sky News channel.

He argued that such a move would be "discriminatory."

"I think the right thing to do is make sure people come forward and be vaccinated because they want to rather than it being made in some way mandatory through a passport," he said.

Zahawi added that if other countries ever made vaccine certificates a condition for entry Brits would be able to ask their doctor to give them evidence.