My post-Xmas reading was Andy Johnson's Seelowe Nord: The Germans are Coming. This is a fictional account of the German invasion of Britain in 1940. The difference is that the author treats the landings in Kent as a diversion for the main effort on the Yorkshire coast.
He doesn't pass on the obvious challenges such an invasion would cause for the German planners. A long sea route with limited fighter air cover, while the British have the advantage of interior lines. And of course it all comes to a sticky end!
The author's approach is also interesting. We are given many views of the invasion from different levels in short chapters. The strategic view from Churchill and the Chief of Staffs, with Alanbrooke the key command figure. And on the German side the High Command. At the operational level we get German paras, UBoat commanders, pilots and others. For the Brits, Home Guards, naval units, resistance and later, armoured units for the counterattack.
I won't spoil the story but it is very well told, extensively researched and few distractions from the action that is relentless. I am pretty familiar with this coast having walked it, but I suspect others would benefit from a map or two. Other than that minor gripe I cannot recommend this book highly enough. I look forward to reading more from this author.
It also caused me to look out my well thumbed copy of Peter Fleming's 1957 book Invasion 1940. A good starting point for anyone wanting to know more about the period. As a wargamer I did a campaign many years ago simulating German attacks on Scotland post invasion and this book has many possibilities for a similar campaign. The Flames of War Blitzkreig supplement has all you need. Now where are the Battlefront and Peter Pig catalogues..........