hi, i had 5 year NCB in private car policy till sep 2007( from esure insurance company) after that i was the taxi driver till sep 2010 (insured with TRADEX through broker graysons). Tradex they gave me 4 year NCB in taxi while i was with them only 3 years. My current insurance company (churchill) they don't accept 5 year NCB from esure because it is old more than 2 years, they refer me towards Tradex and Tradex they don't give the bonus more than 3 years. they say we can not give you the bonus more than 3 years. infect they are not considering the previous 5 year NCB. because of this my insurance premium is getting high in churchill because i failed to provide them NCB of more than 5 years. according to me it should be altogether 8 years, 3 year in taxi and 5 year in private policy. which company i should make contact now. i am very confuse and worry about this. waiting for your reply, thanks