Razaleigh became involved in what became known as the Haw Par imbroglio of the mid-1970s, working in concert with the Singapore-based Haw Par Brothers International Ltd, then one of the subsidiaries under the control of British wheeler-dealer Jim Slater, to acquire control of the British-owned tin conglomerate known as the London Tin Company, and the plantations conglomerate Sime Darby. This was to be achieved through a web of transactions in which both would end up in the control of PERNAS. Things came to a standstill when Singapore accused Haw Par of financial irregularities and later jailed a senior executive.