Secret History: Writing the Rise of Britain’s Intelligence Services by Simon Ball
[PDF file]: […] 173) As well as the history of histories, there is an interwoven narrative about the various services’ activities; so there is much about WW2 and Burgess and Maclean et al. Every now and then an interesting little snippet pops up. There’s this for example. SIS abandoned Passport Control Office as its cover for officers […]