In 2019, ex-offender Marc Conway helped hold down a knifeman who killed two people in a terror attack. But by doing so he risked being recalled to prison. Simon Hattenstone reports Marc Conway risked his life to stop the London Bridge terror attack. Why did he fear being sent to prison for it?. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>

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