| 356 runs | Northamptonshire v Worcestershire | County Ground, Northampton | f9975 |
| 308 runs | Yorkshire v Warwickshire | Edgbaston, Birmingham | f9867 |
| 287 runs | Sussex v Kent | Central Recreation Ground, Hastings | f10066 |
| 284 runs | Kent v Northamptonshire | County Ground, Northampton | f9886 |
| 284 runs | Lancashire v Leicestershire | Aylestone Road, Leicester | f9903 |
| 282 runs | Kent v Worcestershire | Angel Ground, Tonbridge | f9929 |
| 275 runs | Kent v Warwickshire | Edgbaston, Birmingham | f9898 |
| 266 runs | Sussex v Glamorgan | Central Recreation Ground, Hastings | f10058 |
| 258 runs | Yorkshire v Gloucestershire | Spa Ground, Gloucester | f9871 |
| 252 runs | Middlesex v Sussex | County Ground, Hove | f10031 |
| 251 runs | Hampshire v Leicestershire | United Services Ground, Portsmouth | f10077 |
| 244 runs | Northamptonshire v Glamorgan | County Ground, Northampton | f10017 |
| 243 runs | Kent v Middlesex | St Lawrence Ground, Canterbury | f10036 |
| 229 runs | Surrey v Somerset | County Ground, Taunton | f9982 |
| 202 runs | Surrey v Essex | Kennington Oval, Kennington | f9876 |
| 200 runs | Gloucestershire v Worcestershire | Clifton College Close Ground, Clifton | f10044 |
