MI5 misled watchdog about neo-Nazi spy case after lying in court

MI5 apologized to the Investigatory Powers Commissioner's Office (IPCO) for giving false information about a violent neo-Nazi agent, leading to discrepancies in a report rewritten by the IPCO. The watchdog discovered the Security Service's false evidence while investigating the case of neo-Nazi agent X, who coerced his girlfriend while acting as an informant for MI5. Despite initial findings indicating MI5's deviation from its secrecy policy, the final report was altered based on inaccurate assurances provided by the Security Service, prompting questions about IPCO's oversight of MI5's activities.