You do not seem to have a Lifestory page for George Ernest Brett.
https://search.findmypast.co.uk/record?id=gbm%2fwwisd%2f0422136 He is also listed on the Register of Soldier's effects (Ancestry) CWGC have him as Ernest George Brett. Thank you Cynthia Budd
Anne IWM Volunteer commented
Thank you for reporting. A page has been created here https://livesofthefirstworldwar.org/lifestory/7684260