While I haven't fact checked it, my first impression is that the article from the OP isn't from an entirely unbiased source. I do however have one thing which sticks in my craw about SKS, which others may think is petty but to me its a straw in the wind.
When he first appeared in the media, numerous online articles said that his wife, who is a lawyer but not registered as currently practicing worked in the NHS as an Occupational Therapist. I was one before I retired and know that this is a protected title so I checked the register and contacted the health professions council when I found that she was not listed. They dealt with it and magically the online info was changed to "works in occupational health" or vanished all together. Now from my experience in the NHS, the only qualified/registered people who work in or for Occupational Health are nurses, medics and therapists plus non qualified admin support. She isn't registered as any of those and I doubt that she types or files for them.....
yes I know this all sounds a bit psycho but I honestly would not care if KS didn't wave his wife's alleged NHS employment as a political point score but not say what it is that she does....she is absolutely entitled to her privacy, both her and the kids but he needs to shut up about it in public.
For me its a straw in the wind......
btw I know its a long shot but does anybody know of their own knowledge ie not from googling, what it is that she does do?