 His company dealt in every description of Ceylonese produce, principally plumbago (graphite), desiccated coconut, fibre, cacao, rubber, cinnamon and tea.The main export business was done with the United Kingdom and the continent, through the firm's agents in London, Hamburg and other European ports.His residence, the "Sirimathipaya Mansion", equipped then with horse stables and tennis courts, now serves as the Prime Minister's office.