This Practice Note sets out the disclosure obligations of parties that are involved in civil proceedings. For general guidance on disclosure, see: Disclosure—overview.This Practice Note does not intend to cover the claims that are subject to the Disclosure Scheme in the Business and Property Courts. For further guidance, see: Disclosure Scheme (Business & Property Courts)—overview.For further guidance on the disclosure duties for legal practitioners, see Practice Note: Determining legal practitioners’ disclosure duties.Parties’ dutiesCPR 1.3 requires parties to assist the court to further the overriding objective. In practice, this means that a litigant must act in a co-operative, proportionate and reasonable manner during the litigation process with a view to minimising costs.A litigant has specific duties to:•preserve documents, ensuring that no potentially relevant document has been altered, deleted, lost or destroyed once litigation is reasonably in prospect—for further guidance, see Practice Note: Electronic disclosure—CPR Practice Direction 31B•make a reasonable search for documents when giving standard disclosure (CPR 31.7(1) and CPR PD 31A,