I get my childcare paid for (not a single Mum though, a loand of almost £5k, fees pais nd about £2.5 in grants.
A lot of what else you get depends on where you are basing yourself (Welsh Assembly gives extra low income grants), and how much you blag. I got turned down for childcare, wrote them a letter about what exactly was I supposed to cut back on- I ws willing to starve but I couldn't do that to the kids- it was reviewed and I was awarded the fulla mount. I suggest that the original refusal was the admin error, bt you have to stand your ground.
MY OU course I did way back had weekly study groups but it was hard with kids there and no-one to mark you absent. it's worth a look though.
Personally, I'm finding Uni pretty amazing. I DO miss my family / home county a lot, and sometimes I crave a monthly income (which is silly as social services said I'd never get a childminder for my ds1, who has AS). But overall- worth every single second!
If you book up to a visit day (look on the websites of the universities), there is usually talks on finance / advisors available there. And don't be put off too much by the £3k fee, my Access tutor advised us to reagrd it as a tax on getting a step ahead.