The British Blood Scandal: Poisoned at School (ITV1)

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The grief of mother Angela Newcombe is almost unbearable to witness. It hits you in the stomach and twists up towards the heart, a physical anguish.

Angela's adored son Neil Hilliard died of Aids aged 22, in 1994 — the result of HIV from an injection of infected blood plasma when he was 12 years old.

The injection was carried out at school, and the doctors and teachers who oversaw his treatment were well aware that the blood extract they were using could be crawling with disease.