Highest Partnerships For Middlesex Against Northamptonshire
| 1 | 139 | MJ Smith & CT Radley | Lord's Cricket Ground, St John's Wood | 1975 | a1351 |
| 2 | 209 | MJ Smith & GD Barlow | County Ground, Northampton | 1977 | a1920 |
| 3 | 133 | MW Gatting & CT Radley | County Ground, Northampton | 1986 | a4904 |
| 4 | 127 | OA Shah & JWM Dalrymple | County Ground, Northampton | 2006 | a17610 |
| 5 | 117 | | Uxbridge Cricket Club Ground, Uxbridge | 1995 | a9404 |
| 6 | 81* | OA Shah & BL Hutton | County Ground, Northampton | 2003 | a15213 |
| 7 | 49 | | Lord's Cricket Ground, St John's Wood | 1976 | a1633 |
| 8 | 41* | | Lord's Cricket Ground, St John's Wood | 1977 | a2011 |
| 9 | 73 | | Lord's Cricket Ground, St John's Wood | 1999 | a12084 |
| 10 | 22 | | County Ground, Northampton | 1999 | a11965 |
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