Leeann White, the mother of Ava White who was killed in Liverpool in 2021 (Image: Peter Byrne/PA Wire)

A mum whose daughter was murdered in Liverpool city centre said ‘every second counts’ when it comes to saving lives. Ava White was just 12 when she was stabbed in the neck by a boy, then 14, following a disagreement at a Christmas lights switch-on.

Harry Gilbertson was named as the teenage boy who murdered Ava White earlier this year. In the aftermath of the knife attack, Gilbertson ditched the weapon, gave a false alibi and blamed another boy for killing Ava, before changing his story and claiming to have acted in self defence.

Gilbertson, who was known only as Boy A during the 12-day trial proceedings at Liverpool Crown Court, was later jailed for life with a minimum term of

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