§ Guide topic

Chain of custody

One practical guide on chain of custody for UK litigators, in-house counsel and investigators. Read every page online or download the PDF, free and without registration.

Ref · E-D · 2026 · §TPCClass · ConfidentialJuris · England & WalesStatus · Active

A chain of custody, sometimes called the chain of evidence, is the unbroken written record of who held an item of evidence, when, and what they did with it. For digital evidence it also records hash values, so a court can be shown that the data produced is the data seized. These guides set out how to keep that record properly.

They cover what a chain of custody form must capture and how to fill one out, the steps in the chain from seizure to production, transport and storage, hashing and verification, access logging, and the practical consequences when continuity is challenged or the chain is broken.

§ What these guides cover

  • What chain of custody means for digital evidence
  • The steps in the chain, from seizure to production
  • Completing a chain of custody form correctly
  • Hash values and proving evidence integrity
  • What happens when the chain of custody is broken

§ 1 guide on chain of custody

Ask The Library about Chain of custody
Instruct the practice

Bring us in early. Defensibility is built, not retrofitted.

Whether you are responding to a regulator, preparing for disclosure, or scoping an internal investigation, start the chain of custody with a short, confidential conversation.

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