| 98* | JD Kershen (123*) & D Biswas (14*) | Old Westminsters v Harrow Wanderers | Vincent Square, Westminster | 2008 |
| 84 | SW Negus (38) & MWA McKenzie (39*) | Bradfield Waifs v Old Millfieldians | Arundel Castle Cricket Club Ground, Arundel | 2022 |
| 82* | PE Wilkinson (48*) & MD Rath (31*) | Felsted Robins v Old Tonbridgians | Felsted School Ground, Dunmow | 2002 |
| 68 | FDC Austin (60) & SJA Dickson (26*) | Old Cranleighans v Felsted Robins | Jubilee, Cranleigh School | 2021 |
| 67 | JL Gray (59) & JJ Blackwood (15*) | Harrow Wanderers v Bradfield Waifs | Bradfield College, Reading | 2023 |
| 62 | J Sherjan (62*) & DWJ Garrett (8) | Stowe Templars v Old Cliftonians | Clifton College Close Ground, Clifton | 1970 |
| 58 | BJE Kingsnorth (85) & AT Boobbyer (10*) | Old Wellingtonians v St Edward's Martyrs | St Edward's School Ground, Oxford | 2021 |
| 54* | RE Miller (22*) & BJK Helps (26*) | Old Cliftonians v Stowe Templars | Clifton College Close Ground, Clifton | 2022 |
| 53 | HJ Sutton (27*) & HT Rogers (23) | St Edward's Martyrs v Old Bedfordians | St Edward's School Ground, Oxford | 2014 |
| 53 | HTY Shephard (63) & WTG Membrey (3*) | Old Wellingtonians v Old Brightonians | Wellington College, Crowthorne | 2019 |
| 52 | JC Vitali (51) & JEB Walliker (20*) | Sherborne Pilgrims v Old Brightonians | Sherborne School, Sherborne | 2022 |
| 49 | MG Livingstone (17) & PT Mason (29*) | Downside Wanderers v Old Cliftonians | Clifton College Close Ground, Clifton | 1972 |
| 49* | AL Stothard (18*) & NP Thorogood (28*) | Felsted Robins v Uppingham Rovers | Middle Field Pitch 1, Uppingham School | 2007 |
| 49 | [unknown] & [unknown] | Old Westminsters v Old Brightonians | Vincent Square, Westminster | 2010 |
| 48 | DJ Anderson (26*) & JM Proctor (25) | Repton Pilgrims v Charterhouse Friars | Repton School Ground, Repton | 1993 |
| 47 | JPB Coley (27) & FGE Watson-Smyth (19*) | Old Cheltonians v Old Millfieldians | Millfield School, Street | 2025 |
| 44* | KR Bailey (45*) & ATP Higgins (14*) | Felsted Robins v Repton Pilgrims | Repton School Ground, Repton | 1974 |
| 44 | MH Brooks (52*) & GH Dean (4) | Eton Ramblers v Oundle Rovers | Oundle School Ground, Oundle | 1989 |
| 43 | TJC Rayne (23) & EW Thom (10*) | St Edward's Martyrs v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 1995 |
| 42 | SF Daniel (22*) & G Henry (16) | Old Wellingtonians v Old Millfieldians | Wellington College, Crowthorne | 2022 |
| 41 | BA Rodgers (51*) & TW Poerscout-Edgerton (11) | Lancing Rovers v Old Cliftonians | Clifton College Close Ground, Clifton | 1993 |
| 41* | S Dyson (35*) & CH Fellows-Smith (8*) | Old Alleynians v Old Amplefordians | Dulwich College Ground, Dulwich | 1993 |
| 41 | W Spear (29*) & NJ Bevan (17) | Shrewsbury Saracens v Harrow Wanderers | Shrewsbury School, Shrewsbury | 2003 |
| 40* | [unknown] & [unknown] | Sherborne Pilgrims v Bradfield Waifs | Bradfield College, Reading | 1989 |
| 40* | S Noach (35*) & JJ Blanche (4*) | Old Merchant Taylors v Marlborough Blues | Durrants Sports Ground, Croxley Green | 2005 |
| 39 | M Kirkman (20*) & IDF Coutts (20) | Old Alleynians v Haileybury Hermits | Haileybury College Ground, Hertford | 1970 |
| 39 | [unknown] & [unknown] | Sherborne Pilgrims v Old Malvernians | Malvern College Ground, Malvern | 1979 |
| 39 | A Leziac (22*) & GEM Graham (18) | Bradfield Waifs v Oundle Rovers | Oundle School Ground, Oundle | 2013 |
| 39* | JC Vitali (37*) & AD Nurton (11*) | Sherborne Pilgrims v Uppingham Rovers | Upper Field, Uppingham School | 2016 |
| 38 | JW Walter (14*) & AP Thompson (23) | Old Merchant Taylors v Haileybury Hermits | Haileybury College Ground, Hertford | 1995 |
| 38 | RWD Trevelyan (21*) & ACR Bush (19) | Marlborough Blues v Old Cholmeleians | Highgate School Ground, Highgate | 2002 |
| 38* | CW Langley (8*) & JR Coyne (29*) | Old Wellingtonians v Radley Rangers | Wellington College, Crowthorne | 2006 |
| 38* | JC Gonszor (42*) & RA Procter (2*) | Charterhouse Friars v Old Cheltonians | Charterhouse School, Godalming | 2013 |
| 37 | RA Furnival (14) & RWA Pyne (27*) | Repton Pilgrims v Old Wellingtonians | Wellington College, Crowthorne | 1999 |
| 37 | JN Lawton Smith (16) & FR Hustler (19*) | St Edward's Martyrs v Old Brightonians | St Edward's School Ground, Oxford | 2006 |
| 36 | [unknown] & [unknown] | Radley Rangers v Harrow Wanderers | Radley College Bigside Ground, Abingdon | 1981 |
| 36* | JAR Hill (16*) & I Coomaraswamy (15*) | Harrow Wanderers v Old Cheltonians | Harrow School Cricket Ground, Harrow-on-the-Hill | 1995 |
| 36* | TR Elliott (36*) & JSA Nicholls (8*) | Oundle Rovers v Old Brightonians | Brighton College Ground, Brighton | 2007 |
| 35* | [unknown] & [unknown] | Bradfield Waifs v Old Wellingtonians | Wellington College, Crowthorne | 1967 |
| 35* | RF Williamson (35*) & JM Proctor (15*) | Repton Pilgrims v Old Malvernians | Malvern College Ground, Malvern | 1989 |
| 35 | JJ McCulley (41*) & MJ Barham (3) | Old Tonbridgians v Old Amplefordians | Ampleforth College, Ampleforth | 2000 |
| 34 | GJA Goodwin (35) & MD Rath (10*) | Felsted Robins v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 2000 |
| 34* | EJ Montague (30*) & NGL Prior (4*) | St Edward's Martyrs v Rugby Meteors | St Edward's School Ground, Oxford | 2003 |
| 34 | PE Bliss (50*) & JFA Davies (18) | Old Cliftonians v Repton Pilgrims | Clifton College Close Ground, Clifton | 2006 |
| 34* | [unknown] & [unknown] | Old Wellingtonians v Oundle Rovers | Oundle School Ground, Oundle | 2007 |
| 33* | AJ Snow (20*) & TJ Bishop (5*) | St Edward's Martyrs v Oundle Rovers | St Edward's School Ground, Oxford | 1977 |
| 33* | [unknown] & [unknown] | Shrewsbury Saracens v Stowe Templars | Shrewsbury School, Shrewsbury | 1982 |
| 33 | AHF Graveney (39) & JFA Davies (7*) | Old Cliftonians v Marlborough Blues | Marlborough College Ground, Marlborough | 2010 |
| 33 | TM Vickers (23) & JJ Aldous-Fountain (17*) | Old Monmothians v St Edward's Martyrs | Monmouth School, Monmouth | 2024 |
| 32 | [unknown] & [unknown] | Haileybury Hermits v Old Cheltonians | Haileybury College Ground, Hertford | 1994 |
| 32 | TVE Hansom (62*) & CRH Parry (17) | Downside Wanderers v Old Wykehamists | Ridding Field, Winchester | 2023 |
| 31* | RB Weller (36*) & RD Ronald (5*) | Old Whitgiftians v Downside Wanderers | Whitgift School, Croydon | 1988 |
| 30 | [unknown] & [unknown] | Old Wellingtonians v Old Malvernians | Wellington College, Crowthorne | 1989 |
| 30* | SF Cloke (19*) & PM White (5*) | Lancing Rovers v Charterhouse Friars | Lancing College Ground, Lancing | 1990 |
| 30* | TR Elliott (35*) & MN Forbes (11*) | Oundle Rovers v Old Wellingtonians | Wellington College, Crowthorne | 1991 |
| 30 | [unknown] & [unknown] | Oundle Rovers v Old Tonbridgians | Oundle School Ground, Oundle | 2003 |
| 30 | H Mohammed (32) & GC Close-Brooks (6*) | Old Wykehamists v Old Cliftonians | Ridding Field, Winchester | 2008 |
| 30 | JF Noble (31*) & WD Stoner (12) | Rugby Meteors v Old Wykehamists | Ridding Field, Winchester | 2014 |
