I use this data for work from time to time. It's based on actual data, there's no real "that's correct, that's not correct" about it..
There may be a lag in the data being collated, but the raw income, health, employment, housing etc data is what it is.
It absolutely is not correct for my neighbourhood. Although I suspect it is a case of poor data not reflecting reality or lack of data. There are a lot of non-doms so that may be skewing the data, lots of second homes, the area seems to be split into very small areas on the map (sometimes just a single square of 40 houses) so very small sample sizes, much less than 1500. There is an infux of health tourists in the summer who come for medical treatment, so maybe that skewed the data. If the map is based on the last census, there was no one here as everyone had fled to the country or back home abroad during the pandemic, so that could be it 😂
If I look at street check (based on the 2011 census), if I put in the streets that are classified as on the 3rd decile on the map they are showing on streetcheck as 65% degree educated, mostly professional jobs/AB, no social housing of any kind, mostly aged between 30-60 plus kids, 81% of the popuation rated their health as good or very good... Exactly the same as the area next to it that is in the 8th decile on the map. The 2011 stats describe the area far more acurately than "deprived" 😂I suppose crime is above average because it's Central London and the air quality is poor but that is true for the whole area, services are the same for everybody...