| Inns | HS |
| 273 | 64 | Radley Rangers v Old Cranleighans | Radley College Bigside Ground, Abingdon | 2025 |
| 271-6 | 85 | Radley Rangers v Old Bedfordians | Radley College Bigside Ground, Abingdon | 2018 |
| 263-7 | 63 | Radley Rangers v Old Whitgiftians | Whitgift School, Croydon | 1992 |
| 255 | 81 | Radley Rangers v Harrow Wanderers | Harrow School Cricket Ground, Harrow-on-the-Hill | 1978 |
| 253 | 69 | Radley Rangers v Old Millfieldians | Radley College Bigside Ground, Abingdon | 2024 |
| 246-2 | 89* | Radley Rangers v Old Wykehamists | Ridding Field, Winchester | 1989 |
| 245-3 | 95 | Radley Rangers v Old Alleynians | Radley College Bigside Ground, Abingdon | 2025 |
| 236-9 | 65 | Radley Rangers v Uppingham Rovers | Radley College Bigside Ground, Abingdon | 1967 |
| 235-3 | 79* | Radley Rangers v Eton Ramblers | Radley College Bigside Ground, Abingdon | 1967 |
| 232-8 | 71 | Radley Rangers v Oundle Rovers | Oundle School Ground, Oundle | 1978 |
| 232-5 | 69 | Radley Rangers v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 1994 |
| 231-8 | 65 | Radley Rangers v Old Brightonians | Radley College Bigside Ground, Abingdon | 1974 |
| 230-9 | 52 | Radley Rangers v Haileybury Hermits | Haileybury College Ground, Hertford | 1983 |
| 230-6 | 43 | Radley Rangers v Shrewsbury Saracens | Radley College Bigside Ground, Abingdon | 1998 |
| 225 | 77 | Radley Rangers v Sherborne Pilgrims | Radley College Bigside Ground, Abingdon | 1999 |
| 224-8 | 58 | Radley Rangers v Eton Ramblers | Upper Club, Eton College | 1997 |
| 224 | 56 | Radley Rangers v St Edward's Martyrs | St Edward's School Ground, Oxford | 2003 |
| 214-3 | 78* | Radley Rangers v Old Wykehamists | Radley College Bigside Ground, Abingdon | 1999 |
| 209-8 | 70 | Radley Rangers v Rugby Meteors | Rugby School Ground, Rugby | 2019 |
| 207 | 75 | Radley Rangers v Harrow Wanderers | Radley College Bigside Ground, Abingdon | 1968 |
| 207 | 81 | Radley Rangers v Old Malvernians | Radley College Bigside Ground, Abingdon | 2015 |
| 207 | 48 | Radley Rangers v Oundle Rovers | Oundle School Ground, Oundle | 2023 |
| 205-7 | 88 | Radley Rangers v Old Alleynians | Dulwich College Ground, Dulwich | 2011 |
| 204 | 44 | Radley Rangers v Old Tonbridgians | Radley College Bigside Ground, Abingdon | 2006 |
| 203-6 | 61* | Radley Rangers v Eton Ramblers | Radley College Bigside Ground, Abingdon | 1995 |
| 202 | 36 | Radley Rangers v Bradfield Waifs | Bradfield College, Reading | 1994 |
| 201 | 85 | Radley Rangers v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 2001 |
| 201 | 44 | Radley Rangers v Felsted Robins | Radley College Bigside Ground, Abingdon | 2003 |
| 198-9 | 35* | Radley Rangers v Old Wellingtonians | Wellington College, Crowthorne | 2013 |
| 197-5 | 55* | Radley Rangers v Oundle Rovers | Radley College Bigside Ground, Abingdon | 2024 |
