Busting British Exceptionalism about WWII has no political agenda. Since a German invasion of the UK never happened, I could not provide a larger sample set.
The agenda is simple: busting the fact-free fake mythologized history that forms the basis for populism's narcissistic nationalism. I've also written about the:
Dutch mythologized history: https://medium.com/lessons-from-history/wwii-mythology-tour-the-netherlands-1da9113ab649
Italy: https://medium.com/lessons-from-history/world-war-ii-mythology-tour-8b44c9cf0f13
Russian and American WWII myths: https://medium.com/exploring-history/wwii-mythologies-east-and-west-ab1b82774b1d
Britain's Dunkirk myth & BoJo's Battle of Britain Brexit: https://medium.com/exploring-history/wwii-mythology-tour-dunkirk-and-the-battle-of-britain-f182d6c078d6.
Emperor of occupied Japan, MacArthur:
I'm working on Latvia/Lithuania, Japan and France. The malady of fact-free fake history driven by narcissistic nationalism is a global disinformation disease that differs little from country to country.
The overwhelming evidence shows the British population of the Channel Islands' behavior was similar to other occupied western European populations: a minority that actively collaborated, a majority that accommodated and a tiny minority that actively resisted, combined with blinkered bureaucratic inertia and indifference to the survival of the local Jewish minority. It's logical to extrapolate that the rest of the UK would not have behaved very differently had the Germans invaded and occupied it, given what we know of the anti-semitic prejudice of parts of the UK's governing elite (Anthony Eden, for example). The burden of proof is on you to prove that the Channel Islands were fundamentally different from the rest of Britain. If you're open to looking at evidence-based history, I'll email you pdfs of the Bunting book and other sources.