Driving around the country at the time was ignoring guidance rather breaking any law
To hear one of the most shameful periods in our legal history being brushed off as couple of months of half hearted barely observed lockdown is pretty disturbing.
Because you are just making stuff up now.
https://www.legislation.gov.uk/uksi/2020/350/pdfs/uksi_20200...
Restrictions on movement
6.—(1) During the emergency period, no person may leave the place where they are living without reasonable excuse.
Driving around still happened, as some of us need to do it to support systems. There were plenty of lorries and cars on the road.