CAR Audit Number 1 7 March 2008S17/S18 Returns Bulletin The S17/S18 Bulletins keep Financial Institutions & Local Authorities informed of any new developments relating to the S17/S18 reporting requirements. Please ensure the appropriate people in your organisation read it. We suggest that you keep Bulletins at the front of your copy of the S17 or S18 Magnetic Media Specifications What this Bulletin contains This Bulletin contains articles on - 1 Data Security - 2 S17/S18 Spreadsheet Format - 3 Allowable media types - 4 Completion of Type 3 Records for Non-Individuals (S17 only) Enquiries on this bulletin should be addressed to HM Revenue & Customs CAR Audit Returns Unit St Johns House Merton Road Bootle Liverpool L75 1BB Telephone 0151 472 6129 or 0151 472 6136 1 - Data Protection and security of returns 1.1 Your responsibilities under the Data Protection Act 1998 (DPA) We do not set any particular security standards for data coming to us from businesses but are happy to work with anyone who needs to send us data to help secure it. Under the DPA, you are responsible for the security of personal data until we have received it. We have an ongoing review into the security of our data transfers out. We currently secure outgoing data to businesses in the following ways and we encourage everyone to be this careful when transferring information to us. 1.2 What encryption do HMRC use? We encrypt ...