Part 35 and Practice Direction 35 of the Civil Procedure Rules (CPR) deal with expert witnesses. Since the rules came into effect on 26 April, 1999, the Lord Chancellor’s Department (LCD) has issued 29 updates and probably the most significant to affect expert witnesses became effective on 25 March, 2002.

The three main areas covered by the amendments are discussions between experts, additional disclosure rules and (most importantly) additional guidance for experts on their duty and on the form and content of expert reports.