Complex sentence: In many ways there was a dark side to the beauty and fashion in England at this time: in the dingier, less affluent areas of London, thievery, womanising, gambling, the existence of rookeries, and constant drinking ran rampant.
Split into simpler sentences: In many ways there was a dark side to the beauty and fashion in England at this time. In the dingier, less affluent areas of London, thievery, womanising, gambling, the existence of rookeries, and constant drinking ran rampant.