Precious Metals and Diamond Trade Security | CloseProtectionHire

The Easter bank holiday weekend of 2015 produced the most significant jewellery burglary in English legal history. Over four days, a team averaging 60 years of age drilled through a reinforced concrete vault floor at the Hatton Garden Safe Deposit Company in central London and removed the contents of 73 boxes. The eventual recovery value was approximately GBP 14 million. The Metropolitan Police investigation – Operation Zymotic – resulted in the conviction of nine men, all with significant previous criminal records.

What the subsequent sentencing remarks and insurance industry analysis made clear was that the Hatton Garden facility’s security had not been updated in proportion to the value being stored. The physical security specification – vault rating, alarm monitoring, and response protocols – reflected the standards of an earlier era.

The precious metals and diamond trade faces a specific set of security challenges that differ from general executive protection in one fundamental respect: the asset being protected is simultaneously high-value, portable, and difficult to trace once removed from its documentation chain.

The Diamond Trade: Structure and Vulnerability

The global diamond trade flows through a small number of hubs: Antwerp (through the Antwerp World Diamond Centre, which handles an estimated 80-85% of the world’s rough diamond trade), Mumbai, Dubai, Tel Aviv, and New York. Each hub has its own security infrastructure and regulatory environment. Security standards and their enforcement vary considerably between them.

The Kimberley Process Certification Scheme, established in 2003 and operative since January 2003, was created to certify that rough diamonds are sourced from conflict-free areas. It has 85 participating countries as of 2024. The scheme’s chain-of-custody documentation – the Kimberley Process certificate accompanying each export shipment – is a fundamental part of the trade’s compliance infrastructure.

For security operations in the diamond trade, the Kimberley certificate serves a second purpose: it is a provenance document. A consignment that cannot produce Kimberley documentation at a trading point is either non-compliant or potentially stolen. The Security Council’s Panel of Experts reports on countries including the Central African Republic and Zimbabwe have documented repeated evasion of Kimberley Process requirements through fraudulent certificates and smuggling routes.

The Financial Action Task Force published a risk assessment in June 2015 (“Money Laundering/Terrorist Financing Risks and Vulnerabilities Associated with Gold”) that explicitly addressed diamonds alongside precious metals. The FATF identified the following red flags relevant to both security teams and compliance functions:

• High-cash transactions or requests for cash settlement at non-standard stages
• Counterparties who cannot or will not produce documentation of origin
• Trade conducted through intermediaries who resist identification
• Transactions structured in multiple smaller deals that, if combined, would trigger reporting thresholds

These financial crime indicators correlate with actors who pose a broader security risk. A trading counterpart engaged in money laundering through the diamond trade may have connections to organised crime or sanctions-designated entities – either of which represents an operational security risk to trading personnel.

Precious Metals: LBMA Standards and Physical Security

The London Bullion Market Association sets the global benchmark for gold and silver handling standards. LBMA Good Delivery Rules govern the bars traded on the London market and specify requirements for refiners, vault operators, and carriers.

For vault storage, the LBMA requires facilities to meet BS EN 1143-1 – the European standard for resistance-rated safes and strongrooms. The standard grades resistance from Grade 0 (lowest) to Grade XIII (highest). Gold vault facilities typically operate at Grade V minimum, with higher-value or higher-risk facilities at Grade VII or above.

For transport, the LBMA requires use of carriers with approved security ratings and insurance coverage commensurate with the consignment value. Staff handling bullion require vetting to BS 7858:2019 (Screening of Individuals Working in a Secure Environment) – the same standard applied to SIA-licensed security personnel.

The practical security arrangement for a bullion movement involves:

Route planning: No fixed patterns. The carrier does not confirm collection or delivery times until the day. Routes are varied. The vehicle type and configuration are not disclosed in advance.

Vehicle specification: For significant consignments, armoured vehicles rated to specific ballistic and attack-resistance standards. Insurance carriers typically specify minimum vehicle ratings for consignments above certain thresholds.

Personnel: Close protection officers with specialist training in high-value goods transit. The SIA Door Supervisor licence does not cover this role – personnel require additional specialist qualification and, typically, a proven track record in the sector.

Transfer protocols: Handover points are controlled environments. Both parties to the handover are identified before transfer. Chain-of-custody documentation is completed and countersigned at each transfer point.

Courier Operations: The Human Risk

In both the diamond and precious metals trades, the primary security vulnerability in transit is human rather than technical. The carrier’s personnel are the most likely source of intelligence leakage to criminal networks – whether through deliberate disclosure, social engineering, or careless communication.

The CPNI (now NPSA) published guidance on insider threat in high-value goods operations that applies directly to precious metals and diamond courier work. Pre-employment vetting to BS 7858 is the baseline. Behavioural observation during operations – particularly for signs of stress, unusual communication patterns, or sudden changes in financial behaviour – is part of ongoing personnel security.

Social engineering targeting precious metals and diamond courier operations follows a consistent pattern: cultivating a contact within the operation over time, gathering intelligence on collection dates, vehicle configurations, and route patterns, and either passing that intelligence to a criminal network or being the inside contact during the operation itself.

The convicted participants in the Hatton Garden burglary included individuals with contacts in the London security industry who had provided building access intelligence. This pattern – criminal networks with established connections to individuals in or adjacent to security functions – is a consistent feature of major precious metals thefts in the UK and Europe.

London’s Hatton Garden: Post-2015 Changes

Following the 2015 burglary and the subsequent Metropolitan Police review, the insurance market applied significant upward pressure on security standards for independent vault and safe deposit facilities in the UK. The Association of British Insurers and Lloyd’s of London both revised their underwriting requirements for vault facilities.

The CPNI (as it was then named) revised its guidance on secure storage for high-value goods, with specific reference to the vulnerability exposed at Hatton Garden: a roof-level entry point and vault floor penetration that had not been assessed as a viable attack vector in the previous security review. Physical penetration testing of vault facilities – assessing not just the certified resistance of the vault structure itself but the surrounding building fabric and all potential approach routes – became standard requirement for new and renewed insurance cover.

For trading businesses operating within the Hatton Garden quarter and comparable precious metals districts in other cities – including the Antwerp Diamond Quarter, Dubai Gold Souk area, and Mumbai’s Zaveri Bazaar – the security requirement extends beyond the vault itself to the street-level transit between trading floors, vaults, and dispatch points. These short urban transits are a significant exposure point and have been the site of numerous robbery incidents.

Working with Close Protection Teams

For executives and trading principals in the diamond and precious metals sector, close protection requirements overlap significantly with asset protection. The individual carrying the samples case or the courier document wallet is both a person at risk and the custodian of a high-value asset.

Executive protection services for this sector need to encompass:

Personal security for travelling principals: Route planning, vehicle security, and accommodation security as for any executive at elevated risk.

Asset custody protocols: Chain-of-custody documentation integration, transfer point security, and device custody for trading records.

Due diligence support: Background research on trading counterparts, venue security assessment in overseas trading cities, and liaison with local security providers.

Incident response: What happens if a consignment is stolen or an executive is robbed. The protocol differs from a standard security incident – it involves immediate police liaison, insurance notification, and in the case of diamonds, notification to the Art Loss Register and the Gemological Institute of America’s report registry.

For bodyguard hire in Dubai and executive protection in Mumbai – both major trading hubs – teams should carry specific sector experience rather than general executive protection backgrounds. The trading environment is specific, the networks are established, and the threat actors are persistent.

See also security for financial services and banking and insider threat in corporate security.