| 151 runs | Glamorgan v Hampshire | Sophia Gardens, Cardiff | a16842 |
| 144 runs | Kent v Scotland | St Lawrence Ground, Canterbury | a16822 |
| 138 runs | Durham v Surrey | Riverside Ground, Chester-le-Street | a16582 |
| 135 runs | Somerset v Derbyshire | County Ground, Taunton | a16864 |
| 133 runs | Leicestershire v Yorkshire | Headingley, Leeds | a16832 |
| 111 runs | Middlesex v Glamorgan | Sophia Gardens, Cardiff | a16756 |
| 105 runs | Hampshire v Middlesex | Lord's Cricket Ground, St John's Wood | a16626 |
| 102 runs | Warwickshire v Yorkshire | Edgbaston, Birmingham | a16853 |