SummaryA questionnaire was sent to seventy-five doctors in a London cancer hospital enquiring about their use of analgesics in cancer pain.In the 37 replies which were returned a wide range of analgesics was prescribed.In the most painful and distressing conditions, opiates were always used with a strong bias towards diamorphine. However, it was claimed that mild nonnarcotic analgesics given regularly often gave better and longer lasting reliefs than narcotics which were prescribed on a pro re nata basis.