I think one good thing of the 70s (and 80s) was adult education. "Adults" had a massive choice of local college/Poly courses, not just for trades, but also hobbies/crafts, professions, office work, sports, etc. Evening classes, day release, etc was very common and available to all. Lots of courses were heavily discounted and often in numerous locations making them accessible.
I studied for my O levels, A levels and chartered accountancy qualification between our local college of FE (within a mile of home), a Poly just 30 minutes away and another college about an hour away (for my accountancy finals).
My OH did extra O levels to allow him to change careers in his 30's by evening classes.
My mother studied and qualified as a teacher by doing evening classes at a local college (again within a mile of her home!), in her 30s after having children.
Thinking back, in our small seaside town, we had three colleges doing adult education courses, and the nearby small city also had 3 or 4 colleges. There were also adult education courses in other places (mostly for hobby/craft/sports) in places like school/church halls, local school sports centres/swimming pools, etc.
We'd get a booklet twice a year prepared by the local council with a full list of adult education courses, with timings/duration, cost, location, etc. It was really pushed and encouraged.
With the advent of Blair's 50% stupidity, all educational resources are now thrown at 16-21 year olds, whether university, apprenticeships, or basic life skills learnings. Yes, there are "some" things that adults can participate in, but they're now very limited.
Such a shame that a, literally, World leading adult education system was just flushed down the toilet in the 90s and 00s! And boy, are we feeling the repercussions now!