I'm about to go into my third year of a law degree - I've studied through the Open University - and I'm a single parent to DS (who has just turned 6).
I've done the first 2 years full time and that has been tough but doable, made slightly easier this past year by the fact he started school. I also have a very flexible workplace, and a couple of times when I've had to pull all nighters to get assignments finished, my boss has sent me home in pity when I've got to work and told me to have a nap!
I would have loved the experience of going to uni and the support of having other students around you all the time but it just wasn't practical for me. My local uni is new and is more of a college and doesn't have a law option so I'd have either had to move or travel. I looked into it - you do get a lot of financial help and support (though I'm unclear from when it is they're scrapping the maintenance grants and whether the amount you get would change under the universal credits plan) but I decided this way fit me better. It meant I could keep my job, not disrupt my DS's life and be at home while I did it.
If you do an OU degree, even if you do it at a full time level, you're classed as a part time student so you only qualify for the study fees part of a student loan, not the maintenance side, so you would need some sort of supporting job but it's been the best thing I've ever done and I would thoroughly recommend it.
I'm doing my final year over two years because last year got so tough and my grades count more this year, but even if I don't manage to up it, I'm still currently on course for a 2:1 which I'd be happy with.
If it's the degree itself you're after rather than the whole experience the OU is worth looking into - especially since they're cheaper so you'll end up with a much smaller loan!!