If you could do anything what would it be?
I did a distance learning masters around full time work then part time work and a baby. If there is funding now, then I am sure there are lots of courses you could do like this that you fit around existing commitments.
I've retrained doing one very long day a week for 3 years and fitted work around that. It was post grad and didn't matter what degree you had. I got a discount for having a 2:1 (so don't say your degree is useless!).
If you have a crappy minimum wage job you hate then I think that opens up so many doors. You're not paralysed by the reliance of a large income you cannot replicate by moving into a new field, and you are not in a job you love so there is hopefully no emotional ties that are holding you at your current workplace.
You could do anything you wanted really.
Depending on when you did your first degree you could do another one under how funding works - dh did one pre 1998 student loan and post 1998 student loan as they changed the rules. It was the best thing he ever did for himself and is now a lot happier and has a great career.
Funded hcp routes might be worth investigation, you might have to get in debt to do them but you will earn more than minimum wage once you qualify so over say a ten year period you'll be quids in.
To get a 2:1 and to qualify as a teacher you must have intelligence, a work ethic, stamina and determination. To stick at a job you hate for little money again this shows work ethic, stamina, determination, maybe even stubbornness!
I also wanted to say thank you for your thread. I am having a difficult pregnancy and I am struggling and worrying about the future. Being able to see the options for someone else helps me to see I have options too.