"British resistance", "inhospitable climate", yeah right.
Maybe 'inhospitable' isn't the right word, but the British Isles are not conducive to offensive warfighting. The Northern half of England and Scotland are mixed hills, bogs peaty marshland and in winter it is dark and foggy/over-cast. All of which are 'inhospitable' for offensive operations. If you are ever interested I would suggest a trip to the well known British Army Training areas in Sennybridge, Dartmoor or Otterburn. Hell, even a cursory google search of 'Sennybridge training area (albeit in Wales)' would be highly informative.
... And what a long history of guerilla warfare and anti government resistance the English people have, right? Right? Ah yes that's exactly NOT what the British are or were ever known for.
What long history? Well, there was this thing called 'The Empire' and this Empire spanned a quarter of the planet. In the 200 years prior to WW2, the Empire probably experienced more Guerrilla Warfare than any other nation in history. Some notable examples include:
- The Privateers of the 17th/18th Century
- The colonial wars in North America in the 18th century.
- The American Revolution
- The wars of 1812
- Australian Frontier Wars
- The Peninsula campaign in the Napoleonic wars
- The Boer War (where the term 'Commando' became common military parlance and inspired Churchill to create the 'Commandos' of WW2.
- The Irish Independence campaigns spanning much of the 19th/20th Century
- Lawrence of Arabia and the Arab Uprising
- The Four Anglo-Burmese wars
- The occupation of the 500M souls in India over a period of 100 years.
So quite a long history which continues past WW1 (and shows the British understanding of Insurgency and Counter-Insurgency Warfare). Indeed, Britain had a huge volume of experience in Counter-Insurgency operations, albeit as the one on the receiving end. Germany on the other hand, had almost no experience. What is interesting is that Britain probably had substantial interest in elite units which excelled in irregular warfare. The UK raised 4 special service brigades throughout the war, many other independent units including (and I am sure some of them were cross-unit serving) and SOE at its peak was controlling 13000 operatives.
- Special Night Squads (pre-war)
- The special operations executive
- The Special Air Service (so successful it formed the basis of modern special forces operations)
- The Long Range Desert Group
- The Chindits
- The Commandos Bns
- The Parachute Regiment
- etc.
What is interesting is that the vast majority of these elite/irregular formations were all formed of men that were not 'regular soldiers'. For example, the first commando units were formed from Territorial Army units - those sort of soldiers who liked the adventure of playing at war, but were far too obscure to be good soldiers in the regular sense. David Stirling, Orde Wingate, Freddy Spencer Chapman, Ralph Bagnold, Paddy Mayne. All of these men went on to lead highly successful irregular operations overseas. I see no reason why they wouldn't conduct these operations on the British Isles if push comes to shove.
So ... its actually quite a long history of experience of irregular and insurgency operations which continued in the occupied territories of WW2 and would likely form a strong aspect of any counter to the German occupation.