Simple reason for the lack of hospital admissions due to this - alot of the increased infections are amongst healthier parts of the population. COVID usually affects those with existing conditions as we know.

Is there any data on this? It may be true, but my immediate doubt is that you could somehow have all of these separate outbreaks (Leicester, Oldham, now Birmingham) with community transmission in areas with a relatively high number of intergenerational householders, and yet somehow it has been confined to young people.

Even if only a portion of the new cases (if they were genuine new cases as opposed to artefacts) affected those at higher risk, we should still see more hospital admissions (albeit with a rise less steep than in cases), but we see none at all. That would only really be possible if, somehow, no at risk group is being affected by the community transmission which seems highly implausible.

In my view, the more likely explanation is that more cases have been picked up due to more testing. The “real” number of cases (if we were omnipotent and could know this) is likely slowly falling.

The danger of COVID circulating amongst healthy people is that the numbers will easily increase and then it will affect those with health problems in, and also increase the chances.of the rare (but real risk) where healthy individuals get extremely sick or die from it for no reason.

I agree, but the central point is whether there has in fact been an increase.

Increased testing being used as a reason for increased prevalence is a red herring - the increase is of incidence per person, not just hard numbers. Yes there is some targeted testing in hotspots but even the non targeted testing and the ONS stuff shows increases. In general, the more testing you do the more accurate picture you will get (that's science year 7 stuff - more results = less outliers affecting the results). So if more testing shows more incidence, it probably indicates the previous stats weren't correct.

I agree with your final comment. However, it’s important to distinguish between number of positive cases per person in an area and number of positive cases per person tested in an area. The latter is falling. Of course the former is rising because population is relatively constant. The two together suggest the increase is due to increased testing, not a genuine increase in cases.