He would of sent in a p45 & asked for a nil income.. on his situation how did you find out about the Ltd company & also was the Tesla purchased after he became unemployed & he is paying his mortgage as to start off a business he would have to give a projection of what he will be earning if any in the first year so you need to provide proof if it goes further for FIU to investigate if you are saying income does not match lifestyle & then he will have to provide proof
Once you have gathered your proof you need to download it & do a variation in income on the portal or by email but if not enough evidence is gathered this is where they just get rejected