Discretion to exclude improperly obtained evidence in civil proceedings in England and Wales

Abstract Exclusion of improperly obtained evidence is often discussed in relation to criminal proceedings, but not civil proceedings, where concerns about wrongdoing of state actors and deprivation of liberty are not usually present. It is sometimes assumed that judges in civil proceedings in England and Wales had no discretion to exclude relevant and reliable evidence based on how it was obtained (as a distinct concern from exclusion of evidence of little probative value) prior to the enactment of the Civil Procedure Rules 1998. This paper seeks to demonstrate that this is wrong, arguing that a number of sources of power to exclude evidence on the basis of how that evidence was obtained have arisen in England and Wales, and that these are not attributable to the Civil Procedure Rules. There is a discretion which enables exclusion of evidence where this is ‘in the interests of justice’, and a discretion to do with the administration of justice. It may be possible to break these down further, to concerns over abuse of the court's own procedures, and executive illegality. Analysing the decisions leading to these developments reveals the importance of human rights concerns to recognition of exclusionary discretion in civil proceedings, and for informing the content of the discretion/s.