Question 1

Does a broken chain make the evidence inadmissible?

Accepted Answer

In civil proceedings, rarely by itself: relevant evidence is generally admitted and the defect goes to weight, which is where the real damage happens, because weight is exactly what contested exhibits need. In criminal proceedings continuity is policed more strictly as part of proving the exhibit, and serious defects invite exclusion arguments and abuse submissions. The practical rule for both: never litigate to find out; the paper work costs minutes.

Question 2

We already have material that was handled casually before anyone thought about custody. Is it ruined?

Accepted Answer

No: it is bounded. Start the chain today: reference, seal, log and hash everything now; reconstruct the earlier handling honestly in a witness statement (who, where, when, to the best of recollection, with any corroborating records like emails and courier receipts); and let the hashes computed today certify everything forward. The early period will carry what ever weight its reconstruction earns; the point of acting today is to stop the weak period growing another day longer.

Question 3

Who should hold evidence during litigation: the client, the solicitors or the laboratory?

Accepted Answer

Contested originals and masters belong in a laboratory evidence store: purpose-built storage, restricted access, and custody handling as routine rather than exception. Working copies for review live on the provider's platform under logged access. What matters more than the address is the regime: wherever evidence sits, someone must own the file, sign the movements and run the verifications, and the honest question for each c and i date holder is whether they will actually do that for eighteen months.

Question 4

How does chain of custody work for cloud data, where there is no device to seal?

Accepted Answer

The chain attaches to the export event and everything after: the documented mechanism and date of collection, the hash of the exported set at creation, verified movements there after, and the platform's own audit records preserved as corroboration of the source side. What cannot be sealed is evidenced instead: the tenancy's state is the provider's record, and the export's integrity is yours. The cloud collection guides in this series treat the mechanics.

Question 5

Do we really need tamper-evident seals and forms for a modest commercial dispute?

Accepted Answer

Scale the regime, keep the principles: perhaps no evidence room, but always references, a log, restricted storage, signed movements and hashes. The cost of the full discipline on a small matter is an hour and a stationery order; the cost of its absence, if the matter turns contentious about an exhibit, is Example 1. Custody is the cheapest insurance in this series, and the premium does not rise with modesty.

Question 6

What should the chain say when evidence is finally returned or destroyed?

Accepted Answer

A closing entry as formal as the opening one: what was returned to whom, signed for, on what date; or what was destroyed, by what method, certified by whom, under whose author is at i on, referencing the retention decision behind it. The entry completes the account (a chain that trails off invites the question of where the copies went), discharges UK GDPR minimisation duties visibly, and is the row most often missing from otherwise excellent files. cflab. u k · e-disc ove r y. u k ©2026 Computer Forensics Lab Ltd ·cflab.uk ·e-discovery.uk ·info@cflab.uk ·+44 (0)20 7164 6915 Page 15 of 18

Digital Chain Of Custody A Practical Guide For Lawyers