(1) To ascertain how the British public (adults) feel about personal data storage apps and services, and how in control over their personal data they feel, we conducted a UK-wide demographically representative national survey (implemented by survey company, ICM Unlimited, across 15-18 January 2021, 2,065 respondents, online omnibus). (2) To qualitatively assess UK adults' views on control over personal data, and perceptions of personal data storage apps and services, six two-hour focus groups (35 participants) were conducted in February 2021, split according to age (18-34 year olds in Groups A, D and E, and 65+ in Groups B, C and F). (3) To ascertain how the British public (adults) feel about being paid for supplying their biometric and emotion personal data in a controlled fashion via personal data storage apps and services, we conducted a UK-wide demographically representative national survey (implemented by survey company, Walnut Unlimited, across 29 Sep – 1 Oct 2021, 2,070 respondents, online omnibus).