I am a tea drinker from the other side of the pond.
As are many of the folks I work with. I'm having my English Breakfast tea as I type.
I have no quality certifications to put behind my name, I have no college quality anything, and I've been in the Quality field off and on for 35 years. How? I started by strapping broken helicopters to my rear end and doing test flights in them.
Use a rough definition of "competency" to pursue your wish... "Training-Education-Experience".
I consider Experience to be the most valuable. Anyone can sit for hours and listen to some expert drone on about how smart & fantastic they are (you might get something from that).
Education is what it is, just longer Training with a test. (Anyone can pass a test, I'm proof of that, I've an MBA, do you think I really know all that MBA crap?).
Experience is the name of the game, that's where you learn not to put your finger in the flame what's what, and what does or does not..
Good "Experience" coupled with some "Ed" and "Training" is the answer. I encounter people all the time with multiple letters behind their names, certificates on walls and even fancy rings saying "I went here" and what do I really see? People more lost than a flock of blindfolded ducks, flying at night, during a new moon, in a dust storm! All that time getting education, training, paper & abbreviations that has nothing to fall back on because much more time was spent learning and very little was spent doing. Ya gotta "do the do".