MI5 spied on NHS founder Nye Bevan for more than 20 years, newly released files show

• Historical context: Newly declassified MI5 files reveal the Security Service conducted surveillance on Aneurin Bevan, founder of the NHS, for over 20 years from the 1930s onwards due to his left-wing political views
• No direct clinical relevance: This historical disclosure about Cold War-era surveillance practices has minimal impact on contemporary NHS operations or medical practice
• Institutional legacy: The revelation highlights the political origins of the NHS under a figure once deemed a security threat, providing context for understanding the Service's founding principles and values

He came to Security Service's attention in the 1930s when he was considered a left-wing firebrand.

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