If you are so keen on making money then I would definitely recommend you to consider Financial Mathematics program.
Given your physics background, an even better choice will be to apply for an internship or analyst position at some banks in UK and pursuing Financial Engineering at USA, the starting salary for experienced guys is currently around $ 150K, it is very competitive, but if your grades in your under graduate program are fair enough, with 1-3 years of working experience in banking industry nothing can stop you (caution: they will cost you a fortune, but it will take less than a year to pay them off).