| Wkt |
| 2 | 103 | BMI Hyam (51) & JD Kershen (88) | Old Westminsters v Old Alleynians | Dulwich College Ground, Dulwich | 1998 |
| 2 | 100 | JD Kershen (109) & K Raghuveer (28) | Old Westminsters v St Edward's Martyrs | Vincent Square, Westminster | 2001 |
| 3 | 99 | JR Hall (58) & RS Rutnagur (53) | Old Westminsters v Marlborough Blues | Vincent Square, Westminster | 1991 |
| 10 | 98* | JD Kershen (123*) & D Biswas (14*) | Old Westminsters v Harrow Wanderers | Vincent Square, Westminster | 2008 |
| 6 | 91 | JR Hall (99*) & MD Cornes (28) | Old Westminsters v Oundle Rovers | Vincent Square, Westminster | 2003 |
| 8 | 88 | SS Surridge (46*) & JM Cogan (28) | Old Westminsters v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1995 |
| 4 | 80 | [unknown] & [unknown] | Old Westminsters v Eton Ramblers | Vincent Square, Westminster | 1967 |
| 1 | 76 | SS Surridge (62) & RJD Welch (26) | Old Westminsters v Old Whitgiftians | Vincent Square, Westminster | 1976 |
| 2 | 74 | DJ Mahoney (46) & JD Kershen (55) | Old Westminsters v Old Alleynians | Vincent Square, Westminster | 1999 |
| 2 | 74 | AD Campbell (71) & JD Kershen (30) | Old Westminsters v Old Alleynians | Vincent Square, Westminster | 2004 |
| 1 | 68 | AD Campbell (71) & DJ Mahoney (17) | Old Westminsters v Old Alleynians | Vincent Square, Westminster | 2004 |
| 8 | 66 | TWJ Bailey (39*) & AJT Willoughby (41) | Old Westminsters v Marlborough Blues | Marlborough College Ground, Marlborough | 1980 |
| 5 | 63 | FM Mitchell (57) & CJ Broadhurst (19) | Old Westminsters v Old Whitgiftians | Vincent Square, Westminster | 1976 |
| 4 | 61 | [unknown] & [unknown] | Old Westminsters v Oundle Rovers | Oundle School Ground, Oundle | 1970 |
| 1 | 61 | DMH Stranger-Jones (40) & DJ Mahoney (23) | Old Westminsters v Oundle Rovers | Vincent Square, Westminster | 2003 |
| 4 | 59 | SS Surridge (42) & CEN Colvile (48) | Old Westminsters v Downside Wanderers | Vincent Square, Westminster | 1978 |
| 3 | 57 | ATB Rider (45) & JP Barkhan (32) | Old Westminsters v Felsted Robins | Vincent Square, Westminster | 1986 |
| 1 | 56 | JF Mortimer (34) & AA Meyer (21) | Old Westminsters v Eton Ramblers | Vincent Square, Westminster | 1967 |
| 3 | 56 | [unknown] & [unknown] | Old Westminsters v Old Cliftonians | Vincent Square, Westminster | 1997 |
| 5 | 54 | [unknown] & [unknown] | Old Westminsters v Oundle Rovers | Oundle School Ground, Oundle | 1970 |
| 3 | 54 | DMH Stranger-Jones (45) & CFB Miller (24) | Old Westminsters v Downside Wanderers | Vincent Square, Westminster | 2002 |
| 3 | 53 | CJ Broadhurst (75) & CCP Williams (36) | Old Westminsters v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1970 |
| 2 | 50 | AJT Willoughby (25) & CJ Broadhurst (75) | Old Westminsters v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1970 |
| 4 | 50 | CJ Broadhurst (75) & GA Lewis (14) | Old Westminsters v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1970 |
| 10 | 49 | [unknown] & [unknown] | Old Westminsters v Old Brightonians | Vincent Square, Westminster | 2010 |
| 2 | 48 | SS Surridge (62) & JF Mortimer (53) | Old Westminsters v Old Whitgiftians | Vincent Square, Westminster | 1976 |
| 4 | 48 | RS Rutnagur (29) & JP Barkhan (22*) | Old Westminsters v Charterhouse Friars | Vincent Square, Westminster | 1991 |
| 9 | 47* | DS Perrett (16*) & CEN Colvile (29*) | Old Westminsters v Bradfield Waifs | Bradfield College, Reading | 1976 |
| 4 | 47 | JD Kershen (88) & JR Hall (21) | Old Westminsters v Old Alleynians | Dulwich College Ground, Dulwich | 1998 |
| 2 | 47 | MR Korgaonkar (48) & JM Zilkha (9) | Old Westminsters v Old Brightonians | Brighton College Ground, Brighton | 2001 |
