Complex sentence: He has served as an International Consultant for Transco, British Gas in the UK and several UN agencies including FAO, WFP, and was the Director of Hector Kobbekaduwa Agrarian Research and Training Institute.
Split into simpler sentences: He has served as an International Consultant for Transco, British Gas in the UK and several UN agencies including FAO, WFP. He was also the former Director of Hector Kobbekaduwa Agrarian Research and Training Institute.