Nederlandse Veiligheidsdienst

Nederlandse Veiligheidsdienst was the largest Dutch private security firm between 1911 and 1999. Ernst van der Lee started the organisation under the name Gecombineerde Nachtveiligheidsdienst (GNVD).

Merger
The Nederlandse Veiligheidsdienst was sold in 1999 to the Falck Group. Falck already owned Group 4 and Securicor these two companies merged to become Group 4 Securicor. In 2004, the merger was only allowed by the Netherlands Competition Authority if parts of the company were sold to prevent a monopoly in the securities business. Falck Security & Services, was sold to Facilicom. This resulted in Nederlandse Veiligheidsdienst being renamed Trigion.