Cameras return to Balham Park Surgery, with the GPs trying to help patients who pose a danger to themselves. Long-term patient Allan, who has a number of long-standing health conditions, arrives in Dr Sian Morris's consultation room, claiming that his weight loss is due to the stress of recently moving house. However, the doctor suspects a more sinister cause - crack cocaine - and leaves Allan in no doubt as to the risks of continuing with such a dangerous habit.
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