Johnson made the comments at an impromptu Covid briefing on Monday afternoon (15 November) which came after it was confirmed the age threshold for being offered a booster jab would be lowered to 40 and above.
Michael from Staffordshire asked the PM: "Increasingly, foreign countries are demanding proof of booster Covid vaccination for entry to those countries and to public places.
"Why has the UK government not added the booster dose to the NHS Covid Travel Pass? Is the booster going to be added, and when?
Johnson replied: "We will be making plans to add the booster dose to the NHS Covid Pass."
