This article describes a pilot open art and music therapy group which took place on an assessment ward in a Medium Secure Unit for patients detained under the UK's Mental Health Act. The aim was to offer an optional therapeutic space to patients who had limited access to off-ward therapy and activities, and to see whether this would be of value in this setting.The ward environment is described, the need for onward therapy outlined and relevant literature surveyed The planning, setting up and evaluation of two phases of the work are then detailed, with particular focus on the rationale for the ways in which sessions were run and the roles of the two therapists (one a music therapist, the other an art therapist). Changing group membership and its impact on the therapy is described, and modifications to the original approach explained.Feedback from staff and patients is presented and discussed, leading to reflections on the value of this kind of therapeutic experience in such a setting.