The way personal data is used in criminal investigations is an issue of growing significance. Balancing the huge increase in digital information with our duty to respect privacy and ensure all reasonable lines of inquiry are pursued is an important challenge (Rape victims fear being ‘put on trial’ by phone history, 13 January).

https://www.cps.gov.uk/cps/news/letter-sunday-telegraph-sue-hemming-director-legal-services-personal-data-and-how-it-used