Matches played on 9-13 May 2006

• Leicestershire v Glamorgan at Leicester, 9-12 May 2006
• Gloucestershire v Northamptonshire at Bristol, 10-13 May 2006
• Somerset v Essex at Taunton, 10-13 May 2006
• Worcestershire v Derbyshire at Worcester, 10-13 May 2006