Yes over the actions in February and March.
Would not have been possible to do a full lockdown too early, but even after we saw what was happening in Italy we barely tried to contain it!
Weeks ago we were still being told large gatherings posed "no risk" (Crufts, Cheltenham, big football games in England and Scotland...) Many of these involved people converging from far afield, a far greater risk to spread it than locals gathering in a pub.
No temperature checks at airports, even for those travelling from very infected areas. This would not have caught all cases of course but it could have identified some.
Very little attempt to isolate those returning from Italy after half term.
When other countries with fewer cases were introducing light forms of social distancing, our PM was still downplaying the risks and even boasting about "shaking hands with everyone I met in the hospital".
The announcement that individuals should not go to work, school etc if they had symptoms should have been made weeks earlier (much less disruptive than completely closing schools and a pretty sensible attitude even without a pandemic).
Then the time wasted before they U-turned on the awful "herd immunity".
Remember that many of those dying today became infected 4 weeks ago (or longer if they've been on a ventilator for a while).
What were we doing then?
And all these weeks (months) they were downplaying the risks, what is truly unforgivable is that they were not preparing for the worst at all.
It was not until our cases had escalated that they started scrabbling around to purchase more PPE and ventilators. And even then, we fucked up and missed out on contracts due to inexplicable delays.
So yes there is a lot more they could have done sooner. It was not a choice between "do nothing" and "complete lockdown" back then. The "contain phase" was a joke.