SIA CCTV Evidence Handling & Incident Response 1 — Questions and Answers
Question 1: When preserving CCTV footage as evidence, what is the most important step to ensure its integrity?
- Email the footage to the relevant manager
- Export footage to a secure, write-protected medium (such as a DVD or encrypted USB drive), creating a complete and unedited copy with full chain of custody documentation (Correct answer)
- Copy the footage to a shared network drive immediately
- Overwrite the original recording with a compressed copy to save storage space
Correct answer: Export footage to a secure, write-protected medium (such as a DVD or encrypted USB drive), creating a complete and unedited copy with full chain of custody documentation
Evidential integrity requires exporting footage unedited to a secure, write-protected medium. A documented chain of custody (who had access, when, for what purpose) is essential for the footage to be admissible in court. Any editing or corruption could render it inadmissible.
Question 2: What is the 'chain of custody' in the context of CCTV evidence?
- The network connection linking cameras to the recording system
- The documented record of who has had possession of the evidence, when, and for what purpose — from seizure to court presentation — ensuring it has not been tampered with (Correct answer)
- The chain of command for authorising CCTV access
- The legal chain of ownership of the CCTV system
Correct answer: The documented record of who has had possession of the evidence, when, and for what purpose — from seizure to court presentation — ensuring it has not been tampered with
The chain of custody is a continuous, documented log tracking who had possession of evidential material, when, and why. It demonstrates that the evidence has not been tampered with or contaminated between its collection and its presentation in court proceedings.
Question 3: Under the Police and Criminal Evidence Act 1984 (PACE), how can police obtain CCTV footage from a private operator?
- Police have an automatic right to all CCTV footage at any time
- By requesting voluntary disclosure (which operators can agree to), or by obtaining a Production Order from a magistrate under PACE Schedule 1 (Correct answer)
- Only through a court order signed by a High Court judge
- Police cannot access private CCTV footage under any circumstances
Correct answer: By requesting voluntary disclosure (which operators can agree to), or by obtaining a Production Order from a magistrate under PACE Schedule 1
Under PACE, police can request CCTV footage voluntarily — operators may choose to disclose it for crime investigation purposes under a legitimate interests lawful basis. If an operator refuses, police can obtain a Production Order from a magistrate under PACE Schedule 1 requiring disclosure.
Question 4: What information should be recorded on a CCTV evidence log when footage is extracted for evidential purposes?
- Only the date and time of extraction
- Date and time of extraction, the incident the footage relates to, the period covered, the format and medium used, the name/signature of the person extracting it, and who the footage was given to (Correct answer)
- The full names of everyone appearing in the footage
- The camera serial numbers and installation dates only
Correct answer: Date and time of extraction, the incident the footage relates to, the period covered, the format and medium used, the name/signature of the person extracting it, and who the footage was given to
A comprehensive evidence log supports chain of custody and admissibility. It should record: date, time, and reason for extraction; period of footage covered; format and storage medium; the extractor's name and signature; and the details of any person to whom custody is transferred.
Question 5: Why is CCTV footage considered 'best evidence' in court proceedings?
- Because it is always admissible and cannot be challenged
- Because it is a direct, contemporaneous visual record of events that provides objective evidence of what occurred, which is harder to dispute than witness testimony alone (Correct answer)
- Because it replaces the need for any witness evidence
- Because the judge must accept it without question
Correct answer: Because it is a direct, contemporaneous visual record of events that provides objective evidence of what occurred, which is harder to dispute than witness testimony alone
CCTV footage is valuable as 'best evidence' because it captures events in real time, is objective (not subject to memory failures or bias), and provides detailed visual information about what occurred, who was present, and the sequence of events — making it highly persuasive and difficult to challenge.
Question 6: If a CCTV operator is asked to edit or delete footage before it is handed to police, what should they do?
- Comply if the request comes from a senior manager
- Refuse, as editing or deleting evidential footage could constitute perverting the course of justice or a data protection breach, and report the request to an appropriate authority (Correct answer)
- Check with the legal department before deciding
- Delete only the portions the police do not specifically ask for
Correct answer: Refuse, as editing or deleting evidential footage could constitute perverting the course of justice or a data protection breach, and report the request to an appropriate authority
Tampering with evidential footage (editing, deleting, or altering it) could constitute the serious criminal offence of perverting the course of justice under the Criminal Law Act 1967. A CCTV operator must refuse such requests and report them to the appropriate authority (police, senior management above the requester, or the ICO).
SIA CCTV Evidence Handling & Incident Response 1
When preserving CCTV footage as evidence, what is the most important step to ensure its integrity?