| Inns | HS |
| 263-9 | 79 | Old Whitgiftians v Downside Wanderers | Whitgift School, Croydon | 1988 |
| 254-8 | 74 | Old Whitgiftians v Radley Rangers | Whitgift School, Croydon | 1992 |
| 241-8 | 80 | Old Whitgiftians v Marlborough Blues | Marlborough College Ground, Marlborough | 2005 |
| 240-5 | 67 | Old Whitgiftians v Marlborough Blues | Marlborough College Ground, Marlborough | 1972 |
| 234 | 67 | Old Whitgiftians v Uppingham Rovers | Middle Field Pitch 1, Uppingham School | 1987 |
| 234 | 56 | Old Whitgiftians v Old Cliftonians | Clifton College Close Ground, Clifton | 2000 |
| 232-4 | 73 | Old Whitgiftians v Eton Ramblers | Whitgift School, Croydon | 2009 |
| 231 | 71 | Old Whitgiftians v Harrow Wanderers | Whitgift School, Croydon | 2003 |
| 229-7 | 44 | Old Whitgiftians v Old Cholmeleians | Whitgift School, Croydon | 2008 |
| 222-9 | 85 | Old Whitgiftians v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 2015 |
| 219-9 | 48 | Old Whitgiftians v Old Cholmeleians | Whitgift School, Croydon | 1979 |
| 219-3 | 58* | Old Whitgiftians v Felsted Robins | Whitgift School, Croydon | 2004 |
| 213-4 | 65 | Old Whitgiftians v Oundle Rovers | Oundle School Ground, Oundle | 1971 |
| 209-9 | 61 | Old Whitgiftians v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1979 |
| 206-4 | 50 | Old Whitgiftians v St Edward's Martyrs | Whitgift School, Croydon | 1974 |
| 202-9 | 67 | Old Whitgiftians v Old Wellingtonians | Whitgift School, Croydon | 2010 |
| 199 | 53 | Old Whitgiftians v Charterhouse Friars | Charterhouse School, Godalming | 1970 |
| 194 | 57 | Old Whitgiftians v Charterhouse Friars | Whitgift School, Croydon | 1993 |
| 194-8 | 75 | Old Whitgiftians v Old Wykehamists | Ridding Field, Winchester | 1998 |
| 185 | 56* | Old Whitgiftians v Haileybury Hermits | Haileybury College Ground, Hertford | 2012 |
| 183-5 | 40* | Old Whitgiftians v Marlborough Blues | Marlborough College Ground, Marlborough | 1995 |
| 182 | 93 | Old Whitgiftians v Haileybury Hermits | Haileybury College Ground, Hertford | 2007 |
| 180 | 46 | Old Whitgiftians v Rugby Meteors | Rugby School Ground, Rugby | 1997 |
| 179-7 | 53 | Old Whitgiftians v Marlborough Blues | Marlborough College Ground, Marlborough | 2003 |
| 178 | 46 | Old Whitgiftians v Marlborough Blues | Marlborough College Ground, Marlborough | 1986 |
| 172 | 46 | Old Whitgiftians v Felsted Robins | Croham Manor Road, Croydon | 1983 |
| 171-9 | 82 | Old Whitgiftians v Old Westminsters | Whitgift School, Croydon | 1993 |
| 163 | 33 | Old Whitgiftians v Old Merchant Taylors | Whitgift School, Croydon | 1998 |
| 163-9 | 48* | Old Whitgiftians v Old Wellingtonians | Wellington College, Crowthorne | 2015 |
| 162 | 36 | Old Whitgiftians v Old Alleynians | Croham Manor Road, Croydon | 1990 |
