Does doing 4 a levels look better to uk Unis vs doing 3

Does she love physics and think she can easily get a top grade while still having time to work or volunteer in a caring environment?

Hi I’m the friend here, personally I don’t mind physics in term of now (As Level) but my concern is that the workload may get too much in year 13 as I’m doing triple science and maths. I was just wondering whether having 4 subjects would give me a better chance of getting in, compared to doing 3 subjects of bio, chem, and maths or do they don’t really care about that?

No, you won't score "bonus points" for doing a 4th A-level at almost all medical schools (including Imperial). I believe there were one or two that still did score an extra A-level although I can't recall which - @GANFYD may know if any do still?