Coltart was one of the founders and directors of Capital Radio, an independent radio station that started broadcasting on 28 September 2000 from a Hotel in Harare, following a Supreme Court ruling that nullified the Zimbabwe Broadcasting Corporation's monopoly. On the evening of 4 October, Coltart's house was raided by eleven armed police looking for equipment that was allegedly in contravention of the Radio Communications Act. The police failed to produce a valid search warrant, but nevertheless conducted the search and found nothing. The houses of other directors were also searched and equipment was seized from the Radio's broadcasting premises.