The government's advisor on fire and rescue policy - Peter Holland - has been giving evidence today, at the inquest into the Lakanal House tower block fire.
Six people died in the blaze in Camberwell in 2009.
Ronke Phillips has sent this report from Lambeth Town Hall.
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.