A vaccine prevents serious illness and breaks down the ability of the virus to spread. With most Covid infections amounting to no more than a heavy cold when the vaccine is fully rolled out, pressure on the NHS and care services will cease, and in people centred organisations, especially schools, normality can return. However for international travel to return to anything like a precovid level vaccination certificate plus covid testing will be around for a long time to come. As Blair is pointing out the UK had better get real about vaccination certification for air travel as other countries will create a system without us. The Anti Vaxxers can get used to the idea of living a very restricted lifestyle as the price worth paying for their "high" principles.