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Three quarters of those living closest to Grenfell Tower are suffering from post-traumatic stress disorder (PTSD), according to NHS mental health experts.

The analysis follows a massive effort to screen people for PTSD by a special team set up to provide therapy for those most affected by the tragedy.

The team anticipates that thousands of people will need support in what the NHS says is its largest ever mental health response to a traumatic event.

In the first of two special reports Andrew Bomford was given unique access to the Grenfell Health and Wellbeing Service.

(Photo: Mourners at a Grenfell Tower National Memorial service. Credit: Getty Images)