Luckily I went to a strict place to do mine but there is one place in particular I know of that’s notorious for people who don’t know anything going there and getting passed.
One guy in particular who now runs his own gas company was terminated 3 times where I did mine then went to this other place and passed first time
Had a few phone issues whilst trying to reply earlier, doesn't look like I can edit my abortive reply so will try again 😕
Same with me, chose the firm I'm training with based on recommendations off a couple of decent gas engineers. I wanted to makes sure I avoided the dodgy places (shocking how many there are). The tutor we had during the last week of our MLP was telling us they've had to boot out a couple of guys in the last few years who turned up to do their CCN1 reassessment but couldn't even pull a tightness test despite having qualified with one of these dodgy firms and spent 5 years working in the field. I really hope they crack down on it as not fair on those that follow the rules.