Horizon Discovery is a world-leading gene editing company that designs and engineers genetically modified cells. Horizon builds human disease models and reagents derived from genetically-engineered cells that its customers use, or that are deployed on their behalf to develop novel drugs or cell therapies. Horizon has an international customer base of over 1,400 unique organisations across more than 50 countries, including major pharmaceutical, biotechnology and diagnostic companies. Horizon is headquartered in Cambridge, UK.