Georgia Coan, of Luton road, is holding the event in memory of her late brother Elliot, who died unexpectedly, aged 16, last May.
The 20-year-old said: “My brother was an inspiring policemen who was set to start police cadets, he was very interested in helping the local community and always put others before himself.
Peter Newton Pavillion will host Elliot’s Quizco, from 7pm, and the family are hoping to raise £2000.
Ms Coan said:“My aunty, who also helped to organise the event, thought Help for Heroes is a great charity to give to as my brother was interested in Public services and was also part of Regiment Fitness who work closely with the charity.”
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They have received a lot of support from local businesses, she said: “We are grateful for all the donations from Creations Hair dressers, Avalon UK management, Whipsnade Zoo and London Gliding Club, also Garage Doors Luton are sponsoring the event, allowing us to raise more money.”