The Technology Advisory Panel (TAP) of the Investigatory Powers Commissioner's Office (IPCO) has published an AI Proportionality Assessment Aid ... The tool is built on the recently released framework from the Centre for Emerging Technology and Security at The Alan Turing Institute for assessing privacy intrusion, and incorporates additional considerations.
Ardi Janjeva, Muffy Calder and Marion Oswald, "Privacy Intrusion and National Security in the Age of AI: Assessing proportionality of automated analytics," CETaS Research Reports (May 2023).