Nri and savings account

Hi, Please help me with the below query. One of the client has travelled to UK last july for employment and is yet to open the NRO or NRE accounts and has done all the money earned in UK to resident savings account and converted them to FD. He is unaware of the NRO and NRE accounts and uninformed banks of the three savings accounts, one Trading account and Credit cards. Now could you please suggest the next step if person wants to convert savings account to NRO account and implications? What happens to the FD's in the savings account? Could you please explain the options available Thanks, S priya