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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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.