Good advice above.
Do try Bristol and Warwick as you might get a contextual offer anyway. 3 of my lawyer children went to Bristol, but their first degrees were not law (they converted after as do half of all lawyers even under (for solicitors) the new SQE system (although that can make it a bit more expensive if you aren't sponsored for post grad by a law firm). Don't assume you have to have an LLB by the way if you want to be a lawyer but you will need good A level grades). Another of my lawyer children (again not doing an LLB) went to Nottingham first for a BSc.
Then have others as your back up and go from there. If you do much better than predictions you could always take a gap year and reapply with very good A level grades in hand too.
Good luck.