So disappointing, especially given the hype.
Essentially, didn't believe the historical details presented in the novel, which constantly disrupted the read.
Here be spoilers. You have been warned.
Food shortages, and absence of their descriptions in the novel, was a big issue for me.
Food rationing began in England in January of 1940; the novel opens in August 1940. Food shortages would have been occurring due to the German blockade. Yet every time tea is mentioned in the novel, it is served with cream and LOTS of sugar. In real life, tea was often used more than once; sugar and cream were rationed and in short supply.
One morning. (pg. 82) the protagonist has "delicious porridge with eggs and bacon" for breakfast. Not likely a daily occurrence, since eggs and bacon were in short supply. Bacon specifically was rationed in 1940.
From Wikipedia re rationing: When World War II began in September 1939, petrol was the first commodity to be controlled. On 8 January 1940, bacon, butter and sugar were rationed. Meat, tea, jam, biscuits, breakfast cereals, cheese, eggs, lard, milk, canned and dried fruit were rationed subsequently, though not all at once. In June 1942, the Combined Food Board was set up by the United Kingdom and the United States to coordinate the world supply of food to the Allies, with special attention to flows from the U.S. and Canada to Britain. Almost all foods apart from vegetables and bread were rationed by August 1942. Strict rationing created a black market. Almost all controlled items were rationed by weight; but meat was rationed by price.
At the end of the novel, (pg.287) "Then I had risen and consumed the banquet Nacy had prepared for me. She always cooked too much when she was nervous, and I ate more for than I would've thought could fit in a girl my Size." Don't know what the "banquet" included, but doesn't seem likely.
Additionally, London bombings are conspicuous by their absence in the novel, particularly the Battle of Britain.
Again, from Wikipedia: "The Battle of Britain, also known as the Air Battle for England (German: die Luftschlacht um England), was a military campaign of the Second World War, in which the Royal Air Force (RAF) and the Fleet Air Arm (FAA) of the Royal Navy defended the United Kingdom (UK) against large-scale attacks by Nazi Germany's air force, the Luftwaffe. It has been described as the first major military campaign fought entirely by air forces.[15] The British officially recognize the battle's duration as being from 10 July until 31 October 1940."
This is a historical mystery. While I did not expect there to be as much detail as I might find in historical written by other authors, I expected the descriptions of day-to-day life to be representative. Leaving out the realities of food shortages and bombings seemed to be large omissions, IMO.