Very few interview. So no great need to worry about that. Leaving out Oxbridge and Imperial, there are some great universities that offer Physics. Having said that, the new Physics building at Oxford is a total stunner!
Lots of the top universities in the Complete University Guide offer a variety of courses. Therefore looking through the offerings from
each one will pay dividends. I would also consider if she wants small city/town, large city or campus. In the mix she might consider , UCL, Lancaster, Bath, Loughborough, Warwick, Bristol, Sheffield, Durham, Leeds, York and Manchester. Check the grades they want and she needs an aspirational choice (or two), two or more realistic choices, and one easier to get into choice - the insurance if exams go badly!
Physics grads will go into a variety of graduate level jobs. Mostly well paid. The university web sites tell prospective grads what they might aspire to career wise. Also, she doesn’t need to know now. University is about exploration and finding your niche from a very wide number of avenues. They have careers festivals with employers actively interested in the students. There is a wealth of info available at university.
Lastly, she might also consider a Mechanical Engineering with her A levels. Again it’s a good choice for careers.