| 164 runs | Surrey v Gloucestershire | The Brit Oval, Kennington | a19800 |
| 162 runs | Middlesex v Scotland | Lord's Cricket Ground, St John's Wood | a19761 |
| 151 runs | Somerset v Scotland | County Ground, Taunton | a19792 |
| 148 runs | Gloucestershire v Durham | County Ground, Bristol | a19785 |
| 138 runs | Middlesex v Scotland | Raeburn Place, Edinburgh | a19802 |
| 134 runs | Nottinghamshire v Ireland | Trent Bridge, Nottingham | a19773 |
| 128 runs | Gloucestershire v Surrey | County Ground, Bristol | a19758 |
| 114 runs | Lancashire v Derbyshire | County Ground, Derby | a19799 |
| 110 runs | Somerset v Kent | County Ground, Taunton | a19763 |
| 108 runs | Worcestershire v Hampshire | County Ground, New Road, Worcester | a19804 |