| Inns | HS |
| 211-6 | 48 | Old Alleynians v Rugby Meteors | Dulwich College Ground, Dulwich | 2001 |
| 206-6 | 46* | Old Alleynians v Oundle Rovers | Dulwich College Ground, Dulwich | 1976 |
| 196-6 | 48 | Old Alleynians v Old Cheltonians | College Ground, Cheltenham | 1979 |
| 192-8 | 41 | Old Alleynians v Marlborough Blues | Dulwich College Ground, Dulwich | 1993 |
| 191-8 | 47 | Old Alleynians v Old Tonbridgians | Tonbridge School Ground, Tonbridge | 1999 |
| 185-8 | 38 | Old Alleynians v Old Malvernians | Dulwich College Ground, Dulwich | 1995 |
| 181 | 33 | Old Alleynians v Repton Pilgrims | Repton School Ground, Repton | 1989 |
| 179 | 38 | Old Alleynians v Old Merchant Taylors | Dulwich College Ground, Dulwich | 2001 |
| 177-8 | 42 | Old Alleynians v Eton Ramblers | Upper Club, Eton College | 2003 |
| 176 | 38 | Old Alleynians v Old Wykehamists | Dulwich College Ground, Dulwich | 2015 |
| 170 | 31 | Old Alleynians v Old Malvernians | Malvern College Ground, Malvern | 2018 |
| 167 | 40 | Old Alleynians v Old Merchant Taylors | Dulwich College Ground, Dulwich | 2012 |
| 166 | 41 | Old Alleynians v Haileybury Hermits | Haileybury College Ground, Hertford | 1970 |
| 161-9 | 44 | Old Alleynians v Stowe Templars | Stowe School Ground, Stowe | 1976 |
| 161-9 | 35* | Old Alleynians v Old Amplefordians | Dulwich College Ground, Dulwich | 1993 |
| 160-7 | 45* | Old Alleynians v Old Malvernians | Malvern College Ground, Malvern | 1980 |
| 160 | 31 | Old Alleynians v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 1992 |
| 154 | 30 | Old Alleynians v Bradfield Waifs | Dulwich College Ground, Dulwich | 1988 |
| 153 | 42 | Old Alleynians v Old Merchant Taylors | Durrants Sports Ground, Croxley Green | 1969 |
| 150 | 40 | Old Alleynians v Old Tonbridgians | Tonbridge School Ground, Tonbridge | 1984 |
| 145-5 | 44 | Old Alleynians v Felsted Robins | Dulwich College Ground, Dulwich | 1975 |
| 144 | 36* | Old Alleynians v Rugby Meteors | Dulwich College Ground, Dulwich | 1973 |
| 138 | 38 | Old Alleynians v Old Cheltonians | College Ground, Cheltenham | 2013 |
| 137-5 | 38 | Old Alleynians v Rugby Meteors | Dulwich College Ground, Dulwich | 1977 |
| 136-9 | 27 | Old Alleynians v Old Tonbridgians | Tonbridge School Ground, Tonbridge | 2006 |
| 135 | 29 | Old Alleynians v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 1991 |
| 133 | 39 | Old Alleynians v Radley Rangers | Dulwich College Ground, Dulwich | 2011 |
| 129-7 | 35 | Old Alleynians v Old Brightonians | Dulwich College Ground, Dulwich | 2008 |
| 128-8 | 46 | Old Alleynians v Old Tonbridgians | Old Alleynians Ground, Dulwich Common | 1986 |
| 128 | 29 | Old Alleynians v Old Brightonians | Spen Cama Memorial Ground, Fulking | 2021 |
