I dont know much about PPL but ik its quite competitive so i assume your class with have a smaller size. However, there's the chance you'll be studying content from the other departments relevant to your course. Also if you want a law qualification, it depends on if you want to be a solicitor or barrister: I know that you can just apply to the new exams, the SQE, without doing an conversion, for solicitors; I'm not quite sure but you will probably need to do a conversion then BPTC and get a pupillage.