Too simple a poll so I need to answer it with words. Given the information from SAGE the government timing was exactly right. SAGE unfortunately had too much emphasis on unproven modelling (using a flu based model) and too little from medical staff and those with experience managing epidemics. According to the famous Times report a key video conferenece had a cascade of errors where those few with expertise in epidemic response had technical problems or were absent.
If they had locked down a week earlier the measures might have been strict enough but they were not (R is still too high). All indications are the government expected less public compliance (from their behavioural experts input) so it was stricter than they expected. On it not being strict enough, I can see a way out for most of Europe but we don't look to have enough of a gap to R=1 yet. With the high level of infection currently in the population any easing now puts us in trouble very quickly.
