Evidence given at the inquest into the deaths of six people at a tower block fire in Camberwell today questioned whether a construction manager should have checked whether or not new parts were fire-resistant.
Refurbishment work was carried out at Lakanal House two years before it caught alight in 2009.
Today, the jury heard from Southwark Council's construction manager.
Paul Brand sent this report from Lambeth Town Hall.
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Collins hid the device, two sim cards and two memory sticks inside a crutch while on remand in September.