Over a decade ago around 2009-10 Harry told me that MoD instructed him not to discuss anything about his wartime activities. They monitored his email and when I asked some questions, he answered and then wrote me that MoD was telling him again to shut up. State Secrets Act. I never asked about anything sensitive like his missions (or kill count) but some very general information (selection, places where trained, operating by himself or with a spotter).