Become EPSRC program manager and show your former advisor who the boss is :-)) Other opportunities involve - administrative or purely teaching jobs at universities, - teaching Maths in a private school, - - jobs in academic publishing, - research jobs in industry (IT, petrochemical, pharmaceutical), - spying (GSHC or KGB - have you heard of Anna Chapman?), - law conversion (solicitors specializing in IP), - other businesses (actuarial, treasury, accounting - requires a training contract).