yep. Practise past papers and questions. Mark those yourself and whatever needs work should be clear, back to the textbooks and re-familiarize yourself on that material and see how questions were tackled.
Best technique to get good science A Level grades is using practise exams as a study guider.
There’s a limited amount of material for the A-Level, if it’s not in the text book it’s not in the exam. There’s a limited amount of ways a question can be asked.
If you’re familiar with the text book material and have practiced how to tackle the questions, you’ll get a (very) good mark. Don’t be intimidated, you could get an A*.
If you hit a question and think, can’t remember that at all, stop your exam timer, go read the text book section, then rest start the question.
It’s a really effective way. Also, aim high. Forget the predicted grades, just keep hitting up the practise questions and it’ll come together.
On the Physics vs Physics & philosophy question I wonder if the best person to get hold of might be the Physics admissions tutor at Imperial. If you can ping them an email and ask for a call back, say you want to talk it through. Other option is the offer holder’s day. On ‘prestige’ for the two courses, I’m certain either of those at Imperial will
carry a lot of weight. Really it depends where you see it taking you. In any case I suspect the admissions tutor will say you can sort it all out in the first term. Thing is your undergrad degree really is only the start. If you click with physics as a career you’ll be on a post grad course anyway after 3 short years. If not and you head elsewhere, either course will be fine.