Page 18 - CITS Theft Guide

CITS Guide for Theft Prevention
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Figure 4: The Deter–Detect–Delay–Respond cycle.
5.2. Perimeter Security
The perimeter fence is the first and most visible layer of protection and, per CDM Regulation 18(2)(b),
must be risk-proportionate and free from projecting nails or sharp objects; per Regulation 18(2)(a), the
perimeter must also be identified by suitable signs. Relevant product standards are listed in Annex B. CITS
notes that NPSA no longer tests fences and gates against the Manual Forced Entry Standard, and that this
rating was withdrawn from the Catalogue of Security Equipment from 1 January 2026; specifiers should
instead consult NPSA's current Forced Entry Standards Guidance and, where vehicle attack is a credible
threat, the Vehicle Attack Delay Standard (VADS) or ISO 22343-1. A fence or gate should never be specified
in isolation — it works as part of an integrated perimeter solution supported by detection, lighting,
monitoring, and a resourced response, as described throughout this section.
Perimeter signage: a clearly marked construction area boundary supports CDM Regulation 18(2)(a).