It is reasonable to consider and trust that information taken from us about our medical health and history will be protected by rules on confidentiality and consent. Apart from very rare cases, perhaps of major public interest or for public health reasons, this information will not be shared with others without our consent. However, both a number of reforms in National Health Service patient data management policy (now enshrined in legislation) and developments in the general law on privacy challenge this (...) traditional view of our control and choice over our medical information, as this article will show. In doing so, it analyses the question as to whether in spite of the rhetoric do any of us now really have choice over the access to and use of our medical data? In reality, our choices are limited and in any relationship of trust and shared decision making this ought to be transparent. (shrink)