I took my teaching qualification at Sheffield Uni in the 80's after 20 years as an aerospace engineer. ( I taught CDT).
I had few O levels but several qualifications in engineering, these, I suppose, were the equivalent of a degree.
I researched grants thoroughly and found a discretionary grant that supported myself, wife and 3 children comfortably.
May I suggest that you start by asking about a teaching course at your local Uni and find out if your qualifications are sufficient.
Good luck!
You can do the Access part-time. You would study 2 subjects each year (4 in total, over 2 years). It would be a maximum of about 7.5 hours per week (home study not included). You may also be able to get financial help for the course.
It is possible to do the course via distance learning but I'm not sure if financial help is offered.
It is a great route to further education as it equips you with the skills necessary for degree level study.
I am starting the Access in September at my local college. I am in a similar situation, however I have given up my job to do this. If this is what you really want, you will find a way.
Thanks for all of your advice. Its great to hear that other people have just found a way, and done it.
In response to Octavius - what I really wanted to do was to teach basic skills to adults with learning difficulties. And then I explored a little more and I'm interested in teaching as a foreign language too. As much as I would love to work with Children, at primary school level - I'm not sure I'm cut out for it :-)
Thanks Mountaintoo - I'm going to look into finding a part time access course.