The OS says this -
Issue 5 – Sheila Caffell – Multiple grounds which prove Sheila was alive until after the raid team entered the house. In addition, fresh evidence regarding Sheila at the scene.
Why this is important? Jeremy Bamber was standing outside the house in the company of many police officers when activity was logged as occurring within the house. Therefore, he cannot have been involved.
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Believe the Millbank claim was added later. Or just given to the media.