http://www.aberdeenshire.gov.uk/archaeo ... efence.pdf
This passage is of particular note:
I'm curious as to what is meant by "good communications". Nevertheless, however unworkable landings in Scotland might seem on the surface of things, they must have at least some, probably very limited merit, as it seems highly unlikely that General Mitchell and the military staff he had to convince would be so stupid as to erect the defences detailed in the PDF if such attacks were impossible.It had been noted that during 1938, that the Graf Zepplin photographed the northeast Scottish coast in great detail in preparation for a possible future invasion. Other German aircraft had also been seen photographing the coast around north east Scotland. Mitchell thought it highly likely that this area would be an ideal site for a beach landing invasion force by the German army, due to its sandy beaches and good communications.
I think Invasion 1940 mentions that early plans for an invasion of Britain all included landings on the east coast. Indeed, Grand Admiral Raeder reportedly drew up plans for a grand invasion across the North Sea. I imagine he more than anyone would appreciate the difficulties in carrying out such an operation (he was an opponent of Sealion, I think), presented to Hitler in May 1940, which he had not discussed with OKH.
In looking up information on the Free Polish forces I also came accross this tidbit on the 309 "Land of Czerwien" Army Cooperation Squadron:
Expected?The only Polish squadron formed in Scotland was created in late November 1940 at Renfrew, later moving after the Clydebank 'blitz' to Dunino in Fife where it co-operated with I Polish Corps whose units were defending the east coast of Scotland against an expected German invasion.
Indeed, the accounts of a few war veterans seem to indicate that there were occasions when an assault on the east coast was thought to be imminent; I think there might even have been a false alarm or two. I can't think of anything off the top of my head, but I think one of the old gentlemen in the book Last Post mentions one. Could such false alarms have occured if the Germans had no capability to launch such an operation? Had they perhaps faked up an invasion fleet?
Personally I don't think landings in Scotland would have been at all advisable, but if they were given serious consideration by senior military figures I think they must at least be worth due consideration.