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CDR / Evidence and investigations / Forensic examination and expert reports

Forensic work in Cardiff · evidence for courts & tribunals

Digital forensics for Cardiff. Touch nothing on the exhibit; then the findings stand.

Most of the harm in these cases is done inside the first hour, before anyone thinks to stop. Someone powers the machine up for a look, and traces go. So the exhibit sits behind a hardware write blocker and gets imaged before anybody opens a file; the continuity log is filled in at the bench, not from memory a week later; and the report is written expecting an opposing expert to take it apart. Independent, discreet, and honest about the point where the evidence stops telling you anything.

Reports that meet CPR 35 and CrimPR 19 Every handover recorded Impartial and discreet

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Four rules, every case.

1 — The exhibit is left as foundNo action of ours may change what is held on media that could reach a court. Blocker on, image off, and only after that does anyone look at anything.
2 — Only competent handsIf the original truly has to be worked on, the person doing it must be competent to do it, and must be able to stand up in court and account for the effect.
3 — A record of every stepAn audit trail is kept of all that is done to an exhibit, detailed enough for a third party to repeat those steps and arrive at the same result.
4 — One person answers for itWhoever leads a case carries responsibility for it, including for seeing that these four rules are kept to from beginning to end.

What people bring us.

Yours not here? Ring us →
What shows upWhat the evidence tells youWhat comes back
A laptop the whole dispute hangs onWrite-blocked, imaged, then examined on the copy: artefacts, documents, the order things happenedA plain-English answer, in writing
An ex-employee you suspect took dataEvery USB device attached, uploads to cloud storage or webmail, deletions and wipes — with datesA document HR and your solicitor can work from
Files deleted that a case now rests onProof that they existed, the date they vanished, and what came next — all recovered under continuityThe material itself, dated, with the method shown
A sealed volume that is lawfully yours to openIf a key or password is within reach at all, Passware is pointed at itThe contents, and how the lock gave way
Something headed for a hearingBench work as before, then written to whichever shape applies — CPR Part 35, or CrimPR Part 19A report that will hold in front of a judge
Footage locked inside a DVR or CCTV recorderPulled off with the chain unbroken — the CCTV pages go further into itVideo you can play, plus the paperwork behind it
Posting it to us: post it fully insured and tracked to the intake lab; the carriage home is on us. If you would rather run the packing past someone first, ring before it goes. Every step is set out on the posting guide.

How it goes, step by step.

The whole casebook →
01

A private scoping call first, then a written price Free

It starts with a private conversation, and that costs nothing. Three things shape everything after it: what has happened, where it reaches — which machines, which accounts — and what the evidence needs to establish. Those answers set the scope. The scope sets the single written price, quoted before a device is touched.

Kept confidentialOne fixed figure in writingWhat the evidence must show
02

The image comes first

The blocker goes on first, and the copy is taken before anyone reads anything at all. The device is the evidence in its own right, and in case after case the harm was done by the person who could not resist a quick look.

Write-blocked, then copiedThe original untouched
03

Everything else happens on the copy

From there the work is done on the copy, OSForensics among the tools in use: system artefacts, what was opened and when, what was removed, and the order it all falls into. Notes go down while the work happens rather than being assembled afterwards.

OSForensics against the copyNotes written as we go
04

A report without the padding

Your question gets a plain answer at the top, with the technical detail below it for anyone who wants to check the working. A finding that suits neither side is still a finding, and it stays where it is.

Answer firstThe working below it
05

The whole bundle, hashes and all

A report is only worth what someone else can check, so it never travels alone. Out go the exhibits, the source files, the continuity log, every hash value, and the notes made at the bench. An expert instructed against you can walk it again and reach the same place.

Findings, with exhibitsHash values kept, each move loggedAnyone can repeat it

Notes from the workbench

  • An expert's first duty is to the court — not to the party who instructed us, and not to the fee. What we find is what we write.
  • The Forensic Science Regulator's statutory Code — in force since 2 October 2023, now in its second version — applies to forensic work done for criminal proceedings in England and Wales. A civil claim, an insurance matter or a row with an employer falls outside it altogether, and we will tell you at the start which side of that line your instruction falls on.
  • Handset work is referred on — a phone examined badly is worse than a phone left untouched, so it goes to a lab equipped for it.
  • Nothing leaves this room — the file is opened under a case number, not a name, and only the party who instructed us ever sees what we found.

Why secure the evidence early, and secure it yourself: the Westminster Commission on Forensic Science, whose report appeared in June 2025, traced the collapse of upwards of 30,000 prosecutions across England and Wales over four years to evidence that had been lost, mislaid or made unusable. When HMICFRS examined police digital-forensics backlogs in December 2022, over 25,000 devices were queued. A device imaged properly on day one never sits in a queue at all.

What sits on the bench.

The toolsThe job it doesWhy it helps
X-Ways ForensicsClose examination of disk images: artefacts, usage history, deleted data, timelinesQuick and uncluttered — it suits a small bench that would rather know one tool properly
OSForensicsIndexing a Windows machine, or an image of one, so all of it can be searchedThe broad first sweep: registry hives, recent-file records, every USB device ever attached
PasswareEncrypted volumes, opened where the authority is lawful and a key is within reachEither it opens or it does not; the report records which, with nothing dressed up
Atola Insight ForensicAcquisition behind a hardware write block, hashed on the same passIt writes its own log of the whole acquisition, so continuity begins at sector one
ACE Lab PC-3000 & Data ExtractorFirmware-level repair, where the exhibit is a dying drive tooA single drive is often evidence and a repair job at once; both trades sit in this room

Where we say yes, and where we don't

  • We do: apply the four ACPO/NPCC principles on digital evidence to every case, with no exceptions.
  • We do: take the image behind a blocker, check each copy against MD5 and SHA-256 both, and keep a custody record an outsider could audit.
  • We do: keep to documented, widely used tools — OSForensics on examination, Passware when decryption is lawful — and aim them at the image, never at the original.
  • We don't: claim UKAS accreditation or an ISO certificate, since we hold neither — and where a declaration about credibility is called for, ours appears on page one of every report, and here.
  • We don't: take phone or tablet work, hold talks with ransomware gangs, or bend a finding towards the party paying the bill.

Why put it in writing: an expert has been required by the criminal procedure rules, since 2019, to disclose anything that touches on credibility, and an absent accreditation qualifies. Saying it out loud is not modesty. It takes away the cheapest attack available to the other side.

Straight out of the casebook.

CF · CDF-2026-0521LOGGED ✓

Project files gone, and a South Wales firm sure they were taken

The client came in sure the files had been lifted deliberately. The evidence told a flatter story: a sync client set up wrong had cleared them out of the shared folder, and most of it came back. That finding closed the argument quicker than any accusation would have.

Dispute settledFindings within 6 days

Before you send it off.

Start with these

  • Power it down — every extra minute overwrites something
  • Note down each person who handled it, with times
  • Include the passwords, the cables and the charger
  • Call us before IT goes looking around inside it

What to avoid

  • Let IT have a poke about — every click costs traces
  • Pull the files off yourself first
  • Put an accusation to anyone before the evidence is secured
  • Treat a deletion as evidence of guilt, or of loss

The things people ask on the phone.

What does digital forensics actually involve?

Copying electronic material, examining the copy, and setting out what it shows in a form that survives challenge. Nothing is read until a copy exists. Notes are made as the work goes along, and the write-up is full enough that a second examiner could follow it and land in the same place.

How is a digital forensics case priced in the UK?

No two instructions are the same shape, so there is no tariff to quote from. Working out the scope is free. Then you get a single figure in writing covering imaging, examination and the report, settled before anything is opened. Nobody here runs a clock.

Do you take phones or tablets?

No. This bench takes disks, storage media, computers, Macs and CCTV or DVR recorders. A handset or a tablet is not on that list. Where a phone turns out to be the heart of a matter, we say so plainly and pass you the name of a lab that works on them.

Are you accredited?

No. We hold no UKAS accreditation and no ISO certificate, and the front page of every report says so, because the rules make us declare it. What you get instead is a method open to inspection: the image taken behind a hardware blocker, hashes verified, every move noted as it is made, and a report laid out the way CPR 35 or CrimPR 19 wants it.

That recorder is still writing over it.

While that recorder keeps writing, the clip you need is being covered over — and your deadline has not moved. Book it in. The first look is free, and it stays private.

0800 6890668