I have a book by Trotman about choosing A levels and careers etc. The entry for Physics says the following jobs are particularly suitable Electronics Engineer Geoscientist Medical Physicist Materials Engineer Meteorologist Research Scientist Scientific laboratory technician Secondary school teacher Forensic Scientist Scientific journalist Systems analyst Technical author Technical sales engineer
I studied physics with medical physics (ie mostly general physics, with a third year lecture series on medical physics), and went on to be a medical physicist specialising in radiotherapy, working in hospital to create plans for cancer patients, check that they got the right dose and lots of other things. I now work for the company that makes the treatment machines, and initially I travelled the world training doctors and physicists to use them, and now I work with our engineers to develop new software and hardware to do better treatments.
I love, love, love it, and physics can lead to so many different careers - from the people I studied with there are astrophysicists, science educators, teachers, people in the nuclear industry, sound engineers, people working in financial modelling just to name a few