How do I get into uni with low grades? Watch

okay so i've just finished sixth form this year, and to say the least, i could've done better. i struggled through the 2 years mainly because i was spending most of my time outside school working a fairly physical job, so i was always tired and i wasn't studying.

i came out with CCD in Economics, Spanish and Maths (88 UCAS points). i hadn't applied to uni as i didn't know what i wanted to study, but now i'm looking at courses like business management//accounting etc.

most courses that i'd apply for have entry requirements of over 100 points, so what would increase my chances of getting any offers? I've looked at Access to HE online courses, which are expensive but doable, and I'm not retaking A-levels.
(if it's worth anything, my GCSE grades were very good in comparison - A*s and A's)