The funny thing is... I've never ever been to a garage that had a qualified engineer working as a mechanic.I believe they have since stopped asking for engineers reports for engine changes, originally it was bought in to stop folks saying they had fitted a smaller engine for emissions or to avoid the congestion charge.

In this country there is no official status that qualifies anyone to write that "engineer's report" and no legislation stopping anyone from selling a second hand car engine. (although there is legislation that stops you running an unregulated scrap yard - removing parts from ONE car before sending the remains to a scrap yard does not necessarily break any rules whatsoever)
Properly qualified engineers might be able to design the engine , design the parts that go into it, the tools that produce it, and the methods to check it after the engine has been built... but they are busy doing engineering and unlikely to be working as a mechanic!
Mechanic and/or vehicle technician qualifications make you a mechanic and/or technician (not an engineer).
Based on the statistics quoted by the minister, something like 7000 pre-60 cars fail the annual MOT.
Over the last 20+ years some of them would have been mine.


I've bought cars with "very dubious" existing MOT's and whilst that is frustrating, it's better than no MOT at all.
I have on occassion forgotten to tighten a suspension bolt



Thank goodness I've never forgotten / left undone anything that caused an issue. for anything safety related, I prefer an independent check, and am happy to pay for it.
I have all the equipment I need to rebuild a Minor from ground up, but none of the equipment required for an MOT, neither the will to get it or the space to put it. I generally do a good job (maybe more than most) but am not happy to gamble on the safety of friends and family or the bus queue - Long live the MOT!