| 165 runs | Hampshire v Glamorgan | The Rose Bowl, Southampton | a17499 |
| 129 runs | Gloucestershire v Somerset | County Ground, Taunton | a17415 |
| 125 runs | Lancashire v Durham | Old Trafford, Manchester | a17435 |
| 119 runs | Lancashire v Worcestershire | County Ground, New Road, Worcester | a17417 |
| 114 runs | Warwickshire v Scotland | Edgbaston, Birmingham | a17406 |
| 112 runs | Somerset v Kent | St Lawrence Ground, Canterbury | a17391 |
| 108 runs | Middlesex v Surrey | John Walker's Ground, Southgate | a17481 |