"Mycroft - who of course had no experience of fieldwork, and had the résumé to prove it, should anyone wonder during a performance review -" ...brilliant.

Also, I get the impression that you've been reading the OSS's WW2-era guides to simple sabotage. If not, you might enjoy them... https://www.cia.gov/news-information/featured-story-archive/2012-featured-story-archive/simple-sabotage.html