| 164 runs | Surrey v Gloucestershire | The Brit Oval, Kennington | a19801 |
| 162 runs | Middlesex v Scotland | Lord's Cricket Ground, St John's Wood | a19762 |
| 151 runs | Somerset v Scotland | County Ground, Taunton | a19793 |
| 148 runs | Gloucestershire v Durham | County Ground, Bristol | a19786 |
| 138 runs | Middlesex v Scotland | Raeburn Place, Edinburgh | a19803 |
| 134 runs | Nottinghamshire v Ireland | Trent Bridge, Nottingham | a19774 |
| 128 runs | Gloucestershire v Surrey | County Ground, Bristol | a19759 |
| 114 runs | Lancashire v Derbyshire | County Ground, Derby | a19800 |
| 110 runs | Somerset v Kent | County Ground, Taunton | a19764 |
| 108 runs | Worcestershire v Hampshire | County Ground, New Road, Worcester | a19805 |