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Marchstone Security brass plaque beside a panelled wooden entrance door

About Marchstone Security

A different standard.

Marchstone Security was established in 2025 with the backing of the Croxup Hosier Group, bringing together more than fifty years of experience drawn from the British Army, Special Forces, Security Services and Police.

Heritage & Expertise

Our founding principle is simple: genuine security cannot be achieved through ostentation or display, but through the quiet competence of properly trained professionals. Our operatives have served across domestic and international operations, each selected for their expertise and unimpeachable character.

Proven Discretion

We have provided protection for foreign officials, members of European royal families, and leaders within corporate, banking and technology sectors, as well as family offices and international funds. This breadth of engagement has afforded us deep insight into the requirements of those who value both privacy and protection.

Standards & Certification

Our operational standards derive from established British Standards and international frameworks, ensuring our approach remains both contemporary and proven. We maintain certification to ISO 9001:2015, ISO 18788:2015 and ISO 27001:2013, reflecting our commitment to quality management and information security.

Selection & Standards

Our recruitment extends well beyond industry minimums. Our four-stage selection methodology ensures candidates possess not only technical competence but the physical presence, technological expertise, cognitive ability and work ethic our clients expect.

We believe proper compensation reflects proper expectations. Our operatives are remunerated accordingly, allowing us to maintain standards difficult to achieve through conventional industry practices.

Measured Success

Marchstone Security's success is measured not by recognition or acclaim, but by the quiet satisfaction of clients who conduct their affairs with complete confidence in their personal security and privacy.