Was a German invasion of Britain in 1940 ever feasible?

[Georg Ebner]

No.
Firstly: Let us reject any scare-mongering sensationalism - even a successful inVasion would have just delivered the world the hilarious picture of English gentleMen turning into guerilleros (unless the Hitlerists had extincted most Britons).
Secondly: De facto without agents there the Reich's experts thought, that their AirWar over Britain would have eliminated its WarIndustry nearly alltogether - when in reality the UK achieved at that time the biggest inCrease of all big powers!

[Georg Ebner]

It feels like a joke, but hedges would actually be a serious problem in large parts of the country - the areas defined as 'ancient' rather than 'planned' countryside (i.e. where the open fields system never developed). The Norman bocage (a very similar landscape) was enough of a nuisance for the Allies after D-Day and in that case those defending (obviously) did not have the support of the population.

...and then Your jungle, the agglomerations with their endless series of terraced houses - no chance, at least not for a continental...