An Act to amend the Terrorism Act 2000; to make further provision about terrorism and security; to provide for the freezing of assets; to make provision about immigration and asylum; to amend or extend the criminal law and powers for preventing crime and enforcing that law; to make provision about the control of pathogens and toxins; to provide for the retention of communications data; to provide for implementation of Title VI of the Treaty on European Union; and for connected purposes.