Boris Johnson at yesterday's conference Credit: wpa pool/getty SIR – The Government is at risk of snatching defeat from the jaws of victory. Having won almost universal praise for securing and administering millions of vaccinations, rather than just finishing the task, it appears to be hell-bent on introducing a complex mixture of rules, tests and apps, which will lose it the support it has rightly gained. Graham Blashill SIR – As Covid-19 dies out in this country due to both vaccination and natural immunity – particularly among the unvaccinated young – it is incredible that the Go...