The Hollie Gazzard Trust was created following the murder of 20-year-old Hollie Gazzard in 2014 by an ex-partner. Set up by parents Nick and Mandy, along with sister Chloe, the charity helps reduce domestic violence through creating and delivering programmes on domestic abuse and promoting healthy relationships to schools and colleges.
One of their initiatives is the Hollie Guard, a personal safety app for smartphones, more details can be found in this video.