| 168 runs | Lancashire v Hertfordshire | Brunton Memorial Ground, Radlett | a12004 |
| 162 runs | Gloucestershire v Durham Cricket Board | Riverside Ground, Chester-le-Street | a12001 |
| 151 runs | Yorkshire v Herefordshire | The Recreation Ground, Kington | a12003 |
| 138 runs | Somerset v Wales Minor Counties | St Helen's, Swansea | a12010 |
| 137 runs | Cumberland v Cornwall | Parkside Road, Kendal | a11894 |
| 136 runs | Leicestershire v Ireland | Castle Avenue, Dublin | a12005 |
| 136 runs | Gloucestershire v Glamorgan | Sophia Gardens, Cardiff | a12054 |
| 130 runs | Hampshire v Kent Cricket Board | St Lawrence Ground, Canterbury | a12006 |
| 120 runs | Somerset v Surrey | County Ground, Taunton | a12081 |
| 114 runs | Hertfordshire v Leicestershire Cricket Board | Brunton Memorial Ground, Radlett | a11897 |
| 113 runs | Warwickshire v Buckinghamshire | Pound Lane, Marlow | a11997 |
| 108 runs | Kent v Cheshire | South Downs Road, Bowdon | a11998 |
| 104 runs | Northamptonshire v Nottinghamshire | County Ground, Northampton | a12028 |