At the end of the session, the stimulator will be removed and the patient will be asked to rate the level of any discomfort or fatigue they experienced as well as any other side effects. The therapist will also record whether the stimulator device interfered with the therapy in any way. A heart tracing will be performed at each visit to check the heart rhythm. At the start and end of the 6 week course of physiotherapy, patients arm weakness and level of arm function will be assessed, as well as their general levels of fatigue, mood and quality of life. These will be reassessed at 1 month and 6 months after the course of physiotherapy has ended. The investigators will also interview patients to establish how they found the treatment itself. If the vagal nerve stimulation combined with physiotherapy is acceptable to patients and therapists and there are no safety concerns, the investigators will plan a larger trial of this treatment in stroke patients.