So, you can now earn just shy of 26k, stacking shelves at the supermarket full time. You could aim for a supervisor position for not much more but all that hassle. Or you could go to uni, get in about 80k of debt (PGCE) qualify as a teacher and start on a whopping 6k more. Just to leave within 5 years if the odds are followed through. It is baffling no-one sees the issue with this. Other professional careers and middle management are available.
The wages for people who have done the right thing and got an education are not increasing. Young and people without education are too expensive to hire in comparison to those with an education and experience.
People literally do quit teaching to go and stack shelves. Less stress, much less unpaid over time. The running joke between my colleagues is that Tesco is advertising.