Originally Posted by
LTNman
Vaccinate their own population and demand proof of those arriving have been vaccinated. I expect in the early days of vaccination there will be no proof from the U.K. but then someone will cotton on when restrictions on U.K. citizens are not lifted.
I don't think vaccines work quite like that! They are not 100% effective and many people are unsuited to vaccination, for example those with certain underlying health conditions. A vaccine is useful, but it is no silver bullet and should be used as a part of a sensible and proportionate health strategy. It will be totally unethical to ban someone traveling because they hadn't been vaccinated, it also shows a rather simplistic understanding of the many issues.