I dread the forthcoming social awkwardness as people go about their own 'lockdown easing' in different ways, and some interpret 'you can hug as 'you must hug'. With close family etc it's fine, but meeting up with random groups of friends is probably going to be a constant exercise in negotiation. Physical greetings (and what they look like) are often painful enough in the UK without adding an extra layer of covid uncertainty.