The document provides an overview of UK data retention regulations and the Data Retention and Investigatory Powers Act of 2014. It discusses the European Court of Justice ruling that invalidated the 2006 Data Retention Directive for failing to protect privacy and not having clear rules on access and use of retained data. The UK passed the 2014 Act to establish new data retention requirements domestically in response. The Act allows retention of the same categories of communications data specified in the 2009 Regulations for up to 12 months. It also provides for related notices, safeguards, offenses and a code of practice. The document then lists the key definitions and required types of retained data covered by the Act and 2014 Regulations, including fixed network, mobile and internet data to identify