What is the writing style of this book? How would you describe Perowne's character as a Neurosurgeon?

Saturday is a 2005 critically-acclaimed novel written by English novelist and screenwriter Ian McEwan. It covers several socially and politically relevant themes, as it talks about the Western society after the tragic events that took place on 9/11. The main story focuses on a day (Saturday) in the life of a successful and wealthy neurosurgeon Henry Perowne from London, who gets in a car accident with a criminal and thus gets his life turned upside down.
Typical of his style, McEwan presents a very descriptive prose, vivid landscapes, and thorough character analysis and development. His writing style is unique; he analyzes his characters intimately and realistically and manages to incorporate enough tension in the narrative to keep the readers on edge. The novel is written in the third person, mainly from the perspective of the main protagonist. It has a somewhat historical narrative, as McEwan writes about the protests against the British involvement in the 2003 US invasion of Iraq; however, the majority of analysts consider the novel a thriller. I find it noteworthy to mention that the book is also written in free indirect style, which allows the reader to further explore Perowne’s thought process.
On the surface, Henry Perowne seems like a normal, middle-aged man who lives a privileged lifestyle and has a wonderful family. However, he is constantly looking for meaning in his life, trying to determine what’s right and wrong in a modern society filled with unpredictability and chaos. Thus, through Perowne, McEwan encourages the readers to cherish the small and seemingly insignificant details and moments in life and to think on the complexity of human nature.