| Regimental number | 26242 |
| Place of birth | Maidenhead England |
| Religion | Church of England |
| Occupation | Bootmaker |
| Address | 5 Duff Street, West Perth, Western Australia |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Mother, Mrs K Lester, 5 Duff Street, West Perth, Western Australia |
| Previous military service | 88th Infantry |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Gunner |
| Unit name | Howitzer Brigade 25, Reinforcement 4 |
| AWM Embarkation Roll number | 13/135/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A67 Orsova on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 51st Battalion |
| Fate | Died of wounds |
| Miscellaneous details (Nominal Roll) | *Spelt Sidney Lester on NR |
| Place of burial | Pozieres British Cemetery (Plot II, Row D, Greave No. 24), Ovillers-La-Boisselle, France |
| Panel number, Roll of Honour, Australian War Memorial | 153 |
| Miscellaneous information from cemetery records | Parents: Henry and Kate LESTER, 8 Crawford Road, Maylands, Western Australia. Native of Maidenhead, England |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |