| Runs |
Wkts |
| 574 | 15 | Marlborough Blues v Old Millfieldians | Marlborough College Ground, Marlborough | 2021 |
| 551 | 16 | Bradfield Waifs v Old Millfieldians | Bradfield College, Reading | 2025 |
| 536 | 15 | Radley Rangers v Old Millfieldians | Radley College Bigside Ground, Abingdon | 2022 |
| 508 | 20 | Radley Rangers v Old Millfieldians | Radley College Bigside Ground, Abingdon | 2024 |
| 498 | 16 | Old Millfieldians v Old Cheltonians | Millfield School, Street | 2023 |
| 482 | 20 | Old Malvernians v Old Millfieldians | Malvern College Ground, Malvern | 2019 |
| 478 | 19 | Rugby Meteors v Old Millfieldians | Rugby School Ground, Rugby | 2024 |
| 463 | 18 | Oundle Rovers v Old Millfieldians | Oundle School Ground, Oundle | 2022 |
| 427 | 12 | Old Millfieldians v Charterhouse Friars | Millfield School, Street | 2022 |
| 423 | 19 | Old Tonbridgians v Old Millfieldians | Tonbridge School Ground, Tonbridge | 2025 |
| 405 | 12 | Old Millfieldians v Oundle Rovers | Arundel Castle Cricket Club Ground, Arundel | 2021 |
| 404 | 12 | Old Millfieldians v Old Monmothians | Millfield School, Street | 2025 |
| 395 | 17 | Old Malvernians v Old Millfieldians | Malvern College Ground, Malvern | 2021 |
| 382 | 20 | Old Wellingtonians v Old Millfieldians | Wellington College, Crowthorne | 2022 |
| 381 | 13 | Old Millfieldians v Charterhouse Friars | Millfield School, Street | 2023 |
| 373 | 16 | Old Millfieldians v Old Cheltonians | Millfield School, Street | 2025 |
| 369 | 20 | Old Merchant Taylors v Old Millfieldians | Merchant Taylors' School Ground, Northwood | 2021 |
| 369 | 18 | Old Millfieldians v Eton Ramblers | Millfield School, Street | 2023 |
| 363 | 14 | Old Malvernians v Old Millfieldians | Malvern College Ground, Malvern | 2022 |
| 300 | 20 | Bradfield Waifs v Old Millfieldians | Arundel Castle Cricket Club Ground, Arundel | 2022 |
| 284 | 12 | Lancing Rovers v Old Millfieldians | Lancing College Ground, Lancing | 2021 |
| 275 | 14 | Old Tonbridgians v Old Millfieldians | Tonbridge School Ground, Tonbridge | 2024 |
| 192 | 4 | Old Millfieldians v Old Merchant Taylors | Millfield School, Street | 2021 |
