John Gary Montana

Celsis International Ltd. develops and supplies medical diagnostic products and laboratory services. The company was founded by Sir Christopher Evans in 1992 and is headquartered in Westminster, the United Kingdom.

Part of Charles River Laboratories International, Inc., Celsis Ltd. develops and supplies diagnostic and monitoring systems. The company is based in Margate, UK.

Part of Charles River Laboratories International, Inc., Nastor Investments Ltd. is an acquisition vehicle formed for the purpose of acquiring Celsis International Plc. The company is based in Margate, UK and was founded in 2009.

Founded in 2010, Celsis Group Ltd. is a subsidiary of Charles River Laboratories International, Inc. that manufactures chemical products, electronic measuring and testing equipment. The company is based in Margate, UK.