In 1992, his business empire bought a controlling interest in the Distilleries Company of Sri Lanka PLC (DCSL), which was at the time the largest transaction in the Colombo Stock Exchange.

[12] Jayawardena announced his voluntary resignation from CPC (Ceylon Petroleum Corporation) on 12, January 2012, a post given by Sri Lankan President Mahinda Rajapaksa.

[1] In 2010, he was appointed Knight of the Order of Dannebrog by Queen Margrethe II for his services to Denmark as its Honorary Consul General in Sri Lanka.

[19] Jayawardena held honorary positions including the Senior Adviser for International Trade and Foreign Investments to the then Sri Lankan President Chandrika Kumaratunga.

[citation needed] He was a member of the Apex Task Force to Rebuild the Nation (TAFREN)[21] established by the President of Sri Lanka after the December 2004 tsunami.