Permanent deferral of high-risk groups, including men who have sex with men (MSM), was initially introduced in the 1980s with the emergence of acquired immunodeficiency syndrome (AIDS). Responses indicating potentially unsafe blood may result in deferral. Prior to being allowed to donate blood, a potential donor must undergo a screening questionnaire, 1 which includes questions pertaining to their sexual practices. The UK blood transfusion services rely on voluntary blood donation and exclusion of potential donors can be a controversial and emotive topic.