Just repeat the two exams later in the year. I'd definitely recommend maths and physics a-level for an engineering degree, more so the maths. My course (Aeronautical Engineering) is very mathsy!
Edit: On second thought you're doing product design. I think a lot of universities will accept that instead of physics to access an engineering course. It should tell you in the university prospectus what combination of grades and subjects you need. Your school/college should be able to advise you too.
My advice - keep on the mathematics and get a decent grade in it because that'll give you access to a lot more courses than physics.
Last edited by bgc; 27th Aug 2007 at 11:51.