About Us

First Security is London’s foremost manned guarding company, with more than twenty years’ experience delivering exceptional security services.

We provide a range of prestigious blue-chip institutions with services that are designed, delivered and monitored with an attention to detail, expertise and professionalism second to none. First Security boasts an excellent record of long-term contract retention.

Our continued commitment to quality is realised by First Security’s high-calibre staff. We employ rigorous recruitment procedures, followed by thorough training and testing. Capable, caring and demanding management, with an emphasis on staff welfare, ensures one of the lowest staff turnover figures within the industry.

First Security is the largest of Interserve's three security companies. While our work is predominantly based in central London, First Security can extend operations beyond that area assisted by Interserve’s national capability.