Oliver King died of undiagnosed heart condition

Oliver King was a talented footballer

Oliver King, 12, collapsed during a sports lesson at King David High School in Liverpool.

He had an unknown but treatable condition called Sudden Arrythmic Death Syndrome (Sads), which kills 12 people each week.

Oliver's family believe having more publicly-accessible defibrillators will help cut the number of people who die from Sads.

For more information visit the Olive King Foundation website here.

A defibrillator, like the ones MPs are being taught how to use today

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King defibrillator campaign

Calls for more defibrilators in public buildings will be debated in parliament later. The campaign was launched after the death of 12-year-old Oliver King from Liverpool. He died after a swimming lesson.