The Secret History of MI6 - Keith Jeffery [49]
With Foreign Office backing, Cumming managed to resist some of the army’s more predatory ambitions. Despite concerns about the Dutch government’s attitude, in view of wartime priorities the Foreign Office relaxed its ban on the involvement of diplomatic personnel in intelligence-gathering sufficiently to allow Oppenheim to act as a ‘clearing-house’ and ‘sift’ all military information obtained by Tinsley’s organisation before sending it on to Cumming in London. This arrangement worked increasingly well and improved the quality and reliability of the information coming out of the Low Countries. In November 1915 Macdonogh established a system of ‘zones’ for the rival services, with Cumming broadly given freedom to work in Belgium east of Brussels, while the two GHQ organisations were restricted to the western part of the country. But, as Drake observed, such an artificial arrangement was ‘fundamentally unsound’ and could severely limit the ability of a particular network to collect valuable intelligence. The inevitable overlapping and line-crossing resulting from the rival networks also made for poor security, and disaster struck in 1916 when the Germans arrested a large number of British agents, ‘with the result that our train watching services (both those of G.H.Q. and of the War Office) almost ceased to exist’.9
In May Tinsley was exposed in the Dutch press as a ‘British agent’, and Kirke considered that subsequent, though unsuccessful, efforts to expel him were due to German pressure. The Dutch, in fact, were well aware of both the Allied and enemy intelligence organisations operating on their soil, and it is clear from Walter Kirke’s diary that part of the price the British paid to ensure that their presence continued to be tolerated was the sharing of information with the Dutch authorities. In June reports from Tinsley’s organisation which Oppenheim was forwarding to Cumming were seized by the Germans when they captured the Great Eastern Railway Company’s steamer Brussels, operating the