The FSA expects protection and health insurance to be among the most likely product areas affected if the European Court of Justice (ECJ) rules that gender based pricing is illegal.
Advisers have expressed their shock at revelations a European Court ruling could require insurance contracts to be altered retrospectively and see some providers close to new business.
Some protection and private medical insurance (PMI) providers could be forced to immediately close to new business on 1 March when a European Court decision on gender underwriting is announced.
UK and EU deliberations on extending anti-discrimination law to goods and services are still rumbling on and lobby groups continue to press for resolution of "unfinished business".