The tricks described have been common knowledge for a long time Independent assessment services formally “Atos” have used tricks like this for many years, they also have spies outside the assessment centre in the local car parks and in the waiting rooms, other tricks include toilets out of order, making the client wait longer than their appointment time to see how they cope and using chairs without arms, so the client can be observed getting out of the chair.
My last ESA assessment was with Independent assessment services, their assessment centre was on the second floor I told them I would have to use the lift and would be in a wheelchair, their reply “you can’t use the lift in case there’s a fire”. I managed to get a home assessment, I kid you not these are the exact words the assessor said before the assessment “I shouldn’t be doing this I am not qualified” he looked about 16 years old.