Fusion Antibodies plc, a contract research organization, engages in the research, development, and manufacture of recombinant proteins and antibodies primarily for cancer and infectious diseases in the United Kingdom, the rest of Europe, North America, and internationally. It offers monoclonal antibody discovery and development, antibody sequencing, antibody engineering, antibody humanization and rational affinity maturation platform, recombinant protein expression, and stable cell line development and cGMP scale up services. The company serves pharmaceutical, biotech, and diagnostic companies.