The RG thing is a bit of a misnomer. There are people who have attended LJMU for law and have been extremely successful in graduate life. However, those people are the ones who choose to be at LJMU. They have A*AA but they like a particular professor or their friends are all attending the uni. They're driven people who simply choose to study at LJMU.
You are someone who is studying there because you have no other choice. That is what your downfall will be, not that LJMU is going to be on your degree certificate. It is unlikely that you are going to be able to turn around your entire attitude towards academics and do well on the course, get a high first, when you couldn't even manage to get Cs on some A-Levels. What is likely is you'll scrape a 2:1 from not really engaging with the degree, you will not take up the extracurricular opportunities, you will not have the fortitude to apply to training contract after training contract even though you're getting rejection after rejection.
Accounting might be the way ahead for you. Unless you think you can seriously change how you operate.