Hendrik "Bull" Verweij was one of the founders of the Dutch offshore radio station Radio Veronica, and was president of the station from its founding in 1959 until 1975. He was born in Hilversum. After Veronica was forced to stop, one of the DJs of the station, Rob Out, formed the Veronica Omroep Organisatie: a legal entity that grew out from a candidate broadcasting organisation to the largest broadcaster in the country.

Radio Veronica was an offshore radio station that began broadcasting in 1960, and broadcast offshore for over fourteen years. It was set up by independent radio, TV and household electrical retailers in the Netherlands to stimulate the sales of radio receivers by providing an alternative to the Netherlands state-licensed stations in Hilversum.