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CCTVEVIDENCE · A GUIDE FOR UK LAWYERS CCTV Evidence Recorders, Retention Loops and the Footage That Overwrites Itself While You Draft the Letter COMPUTER FORENSICS LAB

§ ABOUT THE AUTHOR PREPARED BY COMPUTER FORENSICS LAB E-DISCOVERY TEAM CLOCK & TIMELINE VERIFICATION CPR PART 35 EXPERT REPORT S FULL CHAIN-OF-CUSTODY DOCUMENTATION

§ CONTENTS In this guide 01 Executive summary 02 The problem in plain English: evidence on a countdown 03 The recording estate: DVRs, NVRs, cloud cameras and doorbells 04 The preservation race: stopping the overwrite 05 Export and collection: keeping footage evidential 06 Clocks, synchronisation and the timeline 07 Authenticity, enhancement and interpretation 08 Source architecture: where else the evidence lives 09 Worked examples 10 Common mistakes and technical limitations 11 Questions to ask · Suggested wording 12 Checklist and red flags · When to involve a digital forensic expert 13 Frequently asked questions 14 Glossary · References · Disclaimer · How a specialist laboratory can assist

§ 01 · ORIENTATION Executive summary THE HEADLINE POINT: CCTVISWONORLOSTINTHEFIRSTWEEK: PRESERVEBEFORE THELOOP, EXPORTNATIVELY, VERIFYTHECLOCK

§ 02 · FIRST PRINCIPLES The problem in plain English: evidence on a countdown

§ 03 · THEESTATE The recording estate: DVRs, NVRs, cloud cameras and doorbells