Complex sentence: Douglas Murray is a British writer and commentator who was the director of the Centre for Social Cohesion from 2007 until 2011 and is currently an associate director of the Henry Jackson Society.
Split into simpler sentences: Douglas Murray is a British writer and commentator. He was the director of the Centre for Social Cohesion from 2007 until 2011, and is currently an associate director of the Henry Jackson Society.