For me:
Supporting people who want to wear masks but not making it compulsory to wear one except maybe on peak time public transport (those really are the only crowded services where I live); and on London underground of course
Pubs & restaurants stay closed if they can't do 2m betw customer groups
No mass gathering events or team sport (> 6 persons): sorry, sports fans
No live theatre or other performance audiences
One adult only in each group going into a shop/supermarket
Some travel restrictions
Schools, colleges & Unis open but some kind of reduced social contact within schools, so maybe reduced hours
But people can go to offices, most kids have a school routine, haircuts & swimming are possible, etc.
What measures do you hope might be enough & not too painful & sustainable, until we get a vaccine?