Certain privacy principles have been established by industry, (e.g. USCAM, 2006). Over the past two years, we have been trying to understand whether such principles reflect the concerns of the ordinary citizen. We have developed a method of enquiry which displays a rich context to the user in order to elicit more detailed information about those privacy factors that underpin our acceptance of ubiquitous computing. To investigate use and acceptance Videotaped Activity Scenarios specifically related to the exchange of health, financial, shopping and e-voting information and a large scale survey were used. We present a detailed analysis of user concerns firstly in terms of a set of constructs that might reflect user-generated privacy principles; secondly those factors likely to play a key role in an individuals cost-benefit analysis and thirdly, longer-term concerns of the citizen in terms of the impact of new technologies on social engagement and human values.