My son became a taxi driver in April last year. He has failed to advise his insurer and still has "mature student" as his occupation with them. He has just changed to a more powerful vehicle and expects an increase in premium on renewal. When he tells his insurer of his error in not updating his status, will he have his insurance cancelled and face difficulty in finding another insurer? Should he come clean and risk this outcome, or should he change insurer on renewal to save any potential problem?