| 239 runs | Hampshire v Cambridgeshire | Harecroft Road, Wisbech | a10575 |
| 231 runs | Somerset v Herefordshire | County Ground, Taunton | a10584 |
| 196 runs | Yorkshire v Ireland | Headingley, Leeds | a10589 |
| 169 runs | Lancashire v Berkshire | Old Trafford, Manchester | a10580 |
| 144 runs | Derbyshire v Northamptonshire | County Ground, Derby | a10603 |
| 128 runs | Yorkshire v Leicestershire | Grace Road, Leicester | a10606 |
| 111 runs | Worcestershire v Netherlands | County Ground, New Road, Worcester | a10588 |
| 105 runs | Warwickshire v Sussex | Edgbaston, Birmingham | a10662 |
| 101 runs | Gloucestershire v Scotland | The Royal and Sun Alliance County Ground, Bristol | a10579 |