Just heard a mechanic (alleged) has been caught giving out MOT's without seeing the car

this person has been caught doing 29 of these and worked for a main dealer

I cant say anymore due to it going to crown court so Ive heard.
My question is what can happen to the mechanic now in court

Ive heard he has already been sacked from his job and struck off as a MOT tester which is what you would expect.
What about the people who had one of these MOT certificates off him as they should have to get there car re tested you would think as it shouldn't be hard to trace them
Whats your views on this?