A-level Physics uses a lot of maths, but it’s mostly multiplication/division etc, ie mostly GCSE skills. You don’t need A-level Maths to do the course, but you do need to be very comfortable with GCSE-level maths skills (I’d say you should be able to get at least an 8 at least on past papers you do at home). The reason people who don’t take A-level Maths tend to do badly in A-level Physics is because the reason they don’t choose Maths is because they’re not good at it, not because they weren’t taught A-level Maths. Tl;dr: As long as you’re confident in GCSE Maths and do some extra maths practice during sixth form you’ll be fine
However, many uni courses for Physics or Engineering require you to have studied Maths at A-level to be accepted (with some Engineering courses even not accepting anyone who hasn’t done Further Maths), so keep that in mind if you’re planning to study those subjects at uni.