Complex sentence: It is the eighth most populous British city, and sixth most populous in England, with a 2011 population of 466,400 and is at the centre of a wider urban area, the Liverpool City Region, which has a population of around 2 million people.
Split into simpler sentences: It is the eighth most populous British city, and sixth most populous in England. In, 2011 the population was 466,400 and Liverpool at the centre of a wider urban area, the Liverpool City Region, which has a population of around 2 million people.