After looking at rumoured secret Zeppelin bases in Britain in the first few months of the First World War, I asked what the source of these rumours were. In particular, why did people even think that Zeppelins would need to have a base in Britain, given that the reason why they were so threatening was their long range? In the 1913 airship panic, newspapers and magazines regularly published articles and maps showing how they could menace the entire British Isles from Heligoland or Borkum. It must have been one thing that nearly everyone knew about Zeppelins. So why the idea that the Germans would need bases in Britain itself? We're in the realm of folk strategy here.
4 mi[les] inland from Stranraer a private firm have meadows but this is a blind. There are German experts [and a] depot for 2 Zeppelin ships -- being tested in a suitably hilly place... For 3 years a wooden airship has been building in a factory at Friern Barnet in London. Germans are opp[osite] an institute called the Freehold.1
Friern Barnet is a suburb in northern London, while Stranraer is in the Scottish Lowlands (the opposite end of Scotland from the bases rumoured in 1914, incidentally). Pocock doesn't say what he thinks these Zeppelins or airships were going to be used for (I haven't seen the original diary, only the above extract). However, given that he was a relentless amateur spyhunter it's safe to assume that he didn't think they were for benign purposes.2 There was also some press discussion in 1913 about Zeppelins having the range to reach targets in Britain, but perhaps not the range to make it back. However, that was very rare, and doesn't seem to have translated into any widespread speculation about secret bases; Pocock's rumour or story is the only example I know of before 1914. However, there is at least one example from after 1914, though not from Britain: in the Australian mystery aeroplane panic of 1918, there was speculation that German agents had established bases inland or off the coast. But there the rationale is obvious: Australia was so far away from Germany that it was impossible for aircraft to fly between the two, so they would have to fly from somewhere nearer (the other option was a German raider or raiders). Again, that wasn't the case in Britain in 1914.
Quoted in A. J. A. Morris, The Scaremongers: The Advocacy of War and Rearmament, 1896–1914 (London: Routledge & Kegan Paul, 1984), p. 148. ↩
Pocock also wrote an airpower novel set in 1980, revolving around the attack on Britain by Germany, France and Russia, with etheric ships drawing on radiant energy for power. Roger Pocock, The Chariot of the Sun: A Fantasy (London: Chapman and Hall, 1910). ↩