Data Matching – National Fraud Initiative

Data matching under the Cabinet Office and Wales Audit Office National Fraud Initiative

  • Caerphilly CBC is required by law to protect the public funds it administers. It may share information provided to it with other bodies responsible for auditing or administering public funds, or where undertaking a public function in order to prevent and detect fraud.

  • The Cabinet Office and Wales Audit Office are responsible for carrying out data matching exercises.

  • Data matching involves comparing sets of data and computer records held by one body against other computer records held by the same or another body to see how far they match. This is usually personal information. Computerised data matching allows potentially fraudulent claims and payments to be identified. Where a match is found it may indicate that there is an inconsistency, which requires further investigation. No assumption can be made as to whether there is fraud, error or other explanation until an investigation is carried out.

  • Caerphilly participates in the Cabinet Offices National Fraud initiative which is a data matching exercise to assist in the prevention and detection of fraud. The Auditor General for Wales requires this authority to provide information it holds for this purpose.  We are required to provide particular sets of data to the Auditor General for matching for each exercise as detailed here: which also sets out guidance. You can also read national reports on the NFI published before 1.4.2015 by the Audit Commission here Wales Audit Office also publishes information which can be found at

  • Data matching by in Wales is subject to a Code of Practice published by Wales Audit Office. This may be found at's_Code_of_Data_Matching_English.pdf

  • All bodies participating in the Cabinet Office’s data matching exercises receive a report of matches that they should investigate, so as to detect instances of fraud, over or under-payments and other errors, to take remedial action and update their records accordingly.

  • ‚ÄčThe processing of data by the Auditor General in a data matching exercise is carried out with statutory authority under his powers in Part 3A of the Public Audit (Wales) Act 2004. It does not require the consent of the individuals concerned under the Data Protection Act 1998.

  • For further information on the Auditor General’s legal powers and the reasons why he matches particular information, see and You can contact Wales Audit Office, 24 Cathedral Road, Cardiff CF11 9LJ, 029 2032 0616 or email or   The responsible officer at Caerphilly is the Director of Corporate Services who can be contacted for further information on Data matching at CCBC Ty Penallta, Ystrad Mynach, CF82 7PG.

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