No, this is not the peak.
Not even close.
~14 days from infection to symptoms +
~14-21 days from symptom to death (on average)
= 28 - 35 days from infection to death (again, on average)
The people who died today were likely infected somewhere around the end of February.
We went into 'lockdown' 9 days ago, and in the days immediately before that, half the country was still treating this whole thing as 'nothing serious' and an extended holiday, going on day trips to snowdon and down to beaches and parks. We are still 5 days away from the surge in infections that will have caused even starting to show, and then we wait.
IF our lock down measures are enough and enough people immediately began and consistently continue to follow them i.e. IF they are working, then our peak of deaths will begin around mid April and will begin to tail off towards the end of April.
IF.
Hopefully, by then, our infection rates will be dropping and testing will be more prevalent, but that doesn't mean relaxing measures as one 'busy' weekend of people mixing puts us right back at the start of having to lock down and wait.
Or, to put it another way - IF our lockdown measures are working then our peak number of infected still don't know that they are sick!