The family of a teenager who was murdered at a party are launching a fundraising challenge to mark what would have been his 21st birthday.

Charlie Cosser, from Milford near Guildford, was stabbed to death in West Sussex in 2023 when he was 17 years old.

October would have marked his milestone birthday and his family has launched the “21 for 21. 21 Promises for Charlie challenge”.

We’re being encouraged to do 21 laps, press ups, sits ups – anything to raise awareness of charity, Charlie’s Promise.

Martin Cosser is Charlie’s dad.