System theory (ST) explains how signal jamming (SJ) may impede or even reverse processes of professionalization, thereby having a detrimental impact on the quality of services clients receive. In the U.K., there are various metaphorical “cogs” in the Sign Language Interpreting (SLI) system. By applying ST to the profession, we can achieve a better understanding of the current landscape and identify ineffective cogs which potentially disrupt the smooth functioning of other cogs within the system. Improving system operations will result in improved services. We argue that an instigating and mandatory force—legislation—is the central cog that will drive more consistent signaling and streamline professionalization.



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