The Zircon Affair: GCHQ's Secret Satellite vs Parliament
Duncan Campbell's BBC Secret Society Zircon episode (1986–87) was withheld on national-security grounds; AG injunctions, Special Branch OSA searches including BBC Glasgow, and a Commons Speaker/injunction privilege fight followed. BBC institutional history, Hansard, and Campbell's New Statesman PDFs document the process spine. Contested/L2 HOLD—living-person care; no invented conviction caption.