| 2023 U15 Chelmsford |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 100 | 12.0 | | | | 1 | A | | | Chelmsford | Eastern Young Athletes League | 2 Jul 23 |
| 100 | 12.0 | | | | 3 | A | | | Basildon | Eastern Young Athletes League | 6 Aug 23 |
| 100 | 12.1 | | | | 4 | A | | | Chelmsford | Eastern Young Athletes League | 16 Jul 23 |
| 100 | 12.3 | | -1.2 | | 5 | 2 | | | Chelmsford | ESAA English Schools AA Cup | 8 Jul 23 |
| 100 | 12.35 | | -0.8 | | 1 | B | | | Stevenage | Eastern Young Athletes League | 21 May 23 |
| 100 | 12.9 | | | | 4 | A | | | Ware | Eastern Young Athletes League | 23 Apr 23 |
| 200 | 26.4 | | | | 5 | A | | | Ware | Eastern Young Athletes League | 23 Apr 23 |
| 800 | 2:41.3 | | | | 6 | H2 | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |
| 80HU15M | 14.1 | | | | 2 | H2 | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |
| HJ | 1.84 | | | | 1 | A | | | Basildon | Eastern Young Athletes League | 6 Aug 23 |
| HJ | 1.78 | | | | 1 | A | | | Chelmsford | Eastern Young Athletes League | 2 Jul 23 |
| HJ | 1.77 | | | | 4 | | | | Chelmsford | ESAA English Schools AA Cup | 8 Jul 23 |
| HJ | 1.75 | | | | 1 | B | | | Chelmsford | Eastern Young Athletes League | 16 Jul 23 |
| HJ | 1.75 | | | | 3 | | | | Lee Valley | South of England U13/U15/17 & U20/Senior Walks Championships | 13 Aug 23 |
| HJ | 1.73 | | | | 2 | | | | Birmingham | England Athletics U15/U17 Open Championships inc. Age Group Para Championships | 27 Aug 23 |
| HJ | 1.70 | | | | 1= | | | | Grays | Essex County Schools Championship | 10 Jun 23 |
| HJ | 1.70 | | | | 4 | | | | Horspath | South of England U15/U17 Inter Counties | 10 Sep 23 |
| HJ | 1.67 | i | | | 1 | | | | Lee Valley | Essex & Eastern Indoor Championships | 5 Mar 23 |
| HJ | 1.66 | | | | 1 | | | | Cambridge | Eastern AA Championships | 24 Jun 23 |
| HJ | 1.65 | | | | 1 | B | | | Ware | Eastern Young Athletes League | 23 Apr 23 |
| HJ | 1.65 | | | | 2= | | | | Grays | Essex County Championships | 14 May 23 |
| HJ | 1.65 | | | | 1 | A | | | Stevenage | Eastern Young Athletes League | 21 May 23 |
| HJ | 1.60 | | | | 3 | | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |
| HJ | 1.52 | i | | | 3 | B | | | Lee Valley | London Indoor Games Age Groups | 29 Jan 23 |
| LJ | 5.09 | | | | 11 | | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |
| SP4K | 9.24 | | | | 1 | B | | | Chelmsford | Eastern Young Athletes League | 16 Jul 23 |
| SP4K | 8.48 | | | | 13 | | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |
| PenU15M | 1955 | | | | 13 | | | | Brentwood | Essex Schools Combined Event Trials | 24 May 23 |