If you don't mind me saying, as you admit you were running bent at times, maybe you are part of the problem, if people run bent then employers will use them, if you lose your licence it would be very doubtful it would worry who you worked for, It's a shame you didn't manage to work for a good firm, as the outlook would be very different, you are limited to what you can work legally and sticking to the
rules isn't difficult.
There are and always have been cowboy firms in the Transport business, but a quick phone call to the DVSA would quickly sort them out, the rules are there to protect you and to make sure you are not exploited, if you are willing to flout them then you only have yourself to blame.