From Longman Dictionary of Contemporary EnglishSerious Fraud Office, thethe Serious Fraud OfficeˌSerious ˈFraud ˌOffice, the (abbrev. the SFO) a British government department, whose job is to examine complicated cases of fraud (=dishonest business practices) to find out whether businesses have cheated or made money in illegal ways. The SFO has the right to ask the police to charge people if it thinks they are guilty of fraudFrom Longman Business DictionarySerious Fraud OfficeˌSerious ˈFraud ˌOffice noun abbreviation SFOLAWORGANIZATIONS in Britain, the part of the police force responsible for finding out about serious crimes that involve getting money dishonestly → see also Fraud Squad