We're joined now by two people campaigning for better access to defibrillators. mark king is here in the studio. his 12—year old son oliver died after suffering a sudden cardiac arrest in school, and charlie edinburgh lost his dad justin in 2019 — he joins us from chelmsford. good morning, both. iwill start simply, tell me about your son. irate simply, tell me about your son. we lost our simply, tell me about your son. , lost our oliver on the 2nd of march 2011, and that morning started off like a normal day, he got up at 7.00, he went and got my other side, ben, and he came into our room ...