Hi! so, i did EPQ last year and im doing another one this year. I would just like to say i think that question is WAY to broad to condense into 5,000 words. I get you want to talk about the structure of the UK judicial system? may I suggest the following?:
(If you want to stick with what you have now) To what extent is trial by jury a redundant concept?, it is narrow, and you could discuss why it was introduced and if those reasons are still there, and how important it is in a liberal democracy, coming to an effective conclusion on whether it still has a place in our judicial system