The sister of murdered schoolgirl Ava White says her grief fuels her determination to stop children carrying knives.
Ava, 12, was stabbed with a flick-knife by a 14-year-old known as Boy A in Liverpool. Her family now runs the Ava White Foundation, with the aim of preventing knife crime.
Sister Mia, 19, said they have already put resources such as bleed packs around the city.