| Runs |
Wkts |
| 595 | 14 | Old Brightonians v Haileybury Hermits | Brighton College Ground, Brighton | 2001 |
| 572 | 11 | Oundle Rovers v Haileybury Hermits | Oundle School Ground, Oundle | 2005 |
| 569 | 14 | Haileybury Hermits v Rugby Meteors | Haileybury College Ground, Hertford | 1975 |
| 548 | 17 | Haileybury Hermits v Old Amplefordians | Haileybury College Ground, Hertford | 2004 |
| 548 | 17 | Old Wykehamists v Haileybury Hermits | Ridding Field, Winchester | 2006 |
| 543 | 9 | Haileybury Hermits v Old Wellingtonians | Haileybury College Ground, Hertford | 1972 |
| 542 | 17 | Sherborne Pilgrims v Haileybury Hermits | Sherborne School, Sherborne | 2017 |
| 526 | 14 | Haileybury Hermits v Oundle Rovers | Haileybury College Ground, Hertford | 2000 |
| 518 | 17 | Haileybury Hermits v Old Brightonians | Haileybury College Ground, Hertford | 2004 |
| 513 | 15 | Old Cliftonians v Haileybury Hermits | Clifton College Close Ground, Clifton | 1994 |
| 510 | 16 | Old Cheltonians v Haileybury Hermits | College Ground, Cheltenham | 2023 |
| 497 | 17 | Old Tonbridgians v Haileybury Hermits | Tonbridge School Ground, Tonbridge | 2006 |
| 495 | 13 | Haileybury Hermits v Radley Rangers | Haileybury College Ground, Hertford | 1983 |
| 490 | 14 | Old Brightonians v Haileybury Hermits | Brighton College Ground, Brighton | 1986 |
| 481 | 14 | Haileybury Hermits v Old Wellingtonians | Haileybury College Ground, Hertford | 2022 |
| 480 | 16 | Haileybury Hermits v Shrewsbury Saracens | Haileybury College Ground, Hertford | 2003 |
| 467 | 18 | Old Blundellians v Haileybury Hermits | Blundell's School, Tiverton | 1970 |
| 467 | 12 | Radley Rangers v Haileybury Hermits | Radley College Bigside Ground, Abingdon | 1974 |
| 463 | 17 | Old Cliftonians v Haileybury Hermits | Clifton College Close Ground, Clifton | 1995 |
| 462 | 16 | Haileybury Hermits v Sherborne Pilgrims | Haileybury College Ground, Hertford | 1996 |
| 459 | 15 | Haileybury Hermits v Old Cheltonians | Haileybury College Ground, Hertford | 1977 |
| 454 | 18 | Old Blundellians v Haileybury Hermits | Blundell's School, Tiverton | 1985 |
| 440 | 17 | St Edward's Martyrs v Haileybury Hermits | St Edward's School Ground, Oxford | 1989 |
| 433 | 15 | Shrewsbury Saracens v Haileybury Hermits | Shrewsbury School, Shrewsbury | 2015 |
| 431 | 13 | Old Cranleighans v Haileybury Hermits | Jubilee, Cranleigh School | 2024 |
| 429 | 18 | Old Cranleighans v Haileybury Hermits | The Lowers, Cranleigh School | 2014 |
| 428 | 17 | Sherborne Pilgrims v Haileybury Hermits | Sherborne School, Sherborne | 2008 |
| 420 | 12 | Haileybury Hermits v Old Alleynians | Haileybury College Ground, Hertford | 1981 |
| 419 | 12 | Haileybury Hermits v Shrewsbury Saracens | Haileybury College Ground, Hertford | 1976 |
| 419 | 16 | Haileybury Hermits v Old Cliftonians | Haileybury College Ground, Hertford | 1988 |
