West Midlands just a few days behind London.
So what we had was 500 (to 20th March), 2700 (27th March), 6300 (3 April), 8700 (10 April) weekly extra deaths. Probably another week of 8000+ and then subsequent further weeks of thousands of extra deaths.
Lockdown was not until the 23rd, effecting a peak on the 8 April. Lockdown a week earlier (the 16th) and you would have had a peak maybe 1 April, so no effect on week of 27th (still 2700 dead), but reduced dead in week of 3rd and subsequent weeks. 10,000+ lives saved.
Lockdown 2 weeks earlier and this place would be full of even more idiots than now complaining about how the lockdown was unnecessary, but with a peak week of just 2,000 or so, and perhaps 5,000 total extra deaths rather than what will now be around 40,000.
I remember watching Crufts and thinking everyone there was insane, but actually that could still have gone ahead.
The current lockdown is a big failure in that it was too late and still destroyed the economy, but we won't know how many extra deaths we would have had if we did nothing at all.