| 212 runs | Northamptonshire v Nottinghamshire | Trent Bridge, Nottingham | a15284 |
| 191 runs | Somerset v Sussex | County Ground, Hove | a15336 |
| 168 runs | Leicestershire v Surrey | The AMP Oval, Kennington | a15335 |
| 157 runs | Essex v Yorkshire | Headingley, Leeds | a15088 |
| 145 runs | Essex v Glamorgan | County Ground, Chelmsford | a15239 |
| 139 runs | Worcestershire v Kent | County Ground, New Road, Worcester | a15131 |
| 125 runs | Warwickshire v Essex | County Ground, Chelmsford | a15166 |
| 116 runs | Hampshire v Somerset | County Ground, Taunton | a15252 |
| 114 runs | Durham v Scotland | Raeburn Place, Edinburgh | a15201 |
| 112 runs | Middlesex v Scotland | Old Deer Park, Richmond | a15173 |
| 104 runs | Kent v Warwickshire | St Lawrence Ground, Canterbury | a15333 |