home office crime reduction

The National CCTV Strategy


Home Office Scientific Development Branch

HOSDB Main Page

Download HOSDB CCTV and imaging publications, or browse all HOSDB publications.

General link to HOSDB CCTV Publications page

Technical Operational Requirements Manual

This document includes guidance for organisations who wish to install or upgrade CCTV systems. This guidance concentrates on how to best determine your requirements and ensure that the system meets these as closely as possible.

Link to Operational Requirements Manual - Is your CCTV system fit for purpose?

Digital Imaging Procedure

This is a revision of the Digital Imaging Procedure , first published in 2002. This new version aims to build on the success of the original document and not only reflect current advances in technology, but also look to the future. The principal purpose of the procedure remains the same, i.e. to detail the processes involved in the proper capture and handling of digital images for police applications and to define best working practice

Digital Imaging Procedure

CCTV Making it work

CCTV Making it Work: Guidance on training CCTV operators for the Police and local authorities

Making it Work: Guidance on recruitment and selection practice 08-98

CCTV Making it Work: - CCTV Control Room Ergonomics 14-98


It is recognised that the workload of today's CCTV operators is increasing and that the full potential of the CCTV scheme in tackling crime may not be achieved. Video Analytics (VA) systems offer a potential solution to the problem of ‘operator overload' by automatically alerting operators in real time to events of interest or identifying sequences of interest to speed up post event analysis.

To help realise this potential the Home Office has developed the Imagery Library for Intelligent Detection Systems (i-LIDS), which aims to stimulate the development of VA systems.

i-LIDS User Guide V2

HOSDB Videos

The Home Office's Scientific Development Branch (HOSDB) has produced CCTV Technical Concepts: A Guide to Achieving an Effective System (93/08), a training DVD which is intended to provide non-technical users and those buying CCTV systems with an outline of the key issues. Lasting 45 minutes, it uses graphics, video and narration to help cover a range of topics including field of view, illumination, compression, frame rate and resolution.

The video had been made into a series of a 12 short clips, each of approximately 3-4 minutes. Each clip can be viewed below, or you can download the clip to view later. Click on the topic heading to view that clip.

  1. Introduction
  2. Field of View
  3. Depth of Field
  4. Illumination
  5. Dynamic range
  6. Shutter Speed
  7. Sensitivity
  8. Compression
  9. Frame Rate
  10. Resolution
  11. Latency
  12. Display


Every effort is taken to ensure that the information contained on the National CCTV Strategy webpage is both accurate and complete. However, the NPIA, the Home Office and its contributors cannot guarantee that all of the information is consistent with current practice.

This material on the National CCTV Strategy webpage is:

  • not intended to address the specific circumstances of any particular individual or entity.
  • not necessarily comprehensive, complete, accurate or up-to-date.
  • sometimes linked to external sites over which the content owners have no control.
  • not professional or legal advice (if you need specific advice, you should always consult a suitably qualified professional).

The NPIA, the Home Office and its contributors accept no responsibility or liability whatsoever for any unforeseen consequences or loss with regard to the material on this site.

By viewing and/or downloading any of the material on this site you are agreeing to the terms and conditions of this disclaimer.