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The smoke ventilation system was 鈥渁nother story of incompetence and indifference鈥� according to a lawyer representing a group of bereaved, survivors and residents.

Building Control fire regulations expert Paul Hanson from the Royal Borough of Kensington and Chelsea was asked whether he鈥檇 given proper scrutiny to plans for the smoke ventilation system in Grenfell Tower. Legal representatives for some bereaved and survivors claimed that some parts used were of the lowest possible quality, something the system designer denied.

Meanwhile Tenant Management Organisation Chief Executive Robert Black and Repairs Direct boss Graham Webb faced questions over the fitting and maintenance of fire doors.

Presenter & Producer: Kate Lamble
Producer: Sharon Hemans
Editor: Jasper Corbett
Studio Mix: Gareth Jones