Complex sentence: Malcolm Delevingne (1868-1950) was an original member of the League's Opium Advisory Committee and worked in the British Home Office, and was an expert on the control of narcotic drugs.
Split into simpler sentences: Malcolm Delevingne (1868-1950) was an original member of the League's Opium Advisory Committee, and worked in the British Home Office. He was an expert on the control of narcotic drugs.