Electrosurgical systems comprising an electrosurgical network connecting a plurality of electrosurgical connection units (each connectable to an electrosurgical instrument) and an electrosurgical generator such that an electrosurgical signal generated by the electrosurgical generator can be controllably provided to a selected combination of electrosurgical connection units. Such electrosurgical systems allow an electrosurgical instrument attached to any of the plurality of electrosurgical connection units to be dynamically controlled by the electrosurgical generator.