Reference
OpenAI's Answer
Martin Salter, a former Labour MP for Reading West, was actively involved in union activities early in his career. He notably worked as a union activist focusing on worker's rights. More specifically, he joined the Transport and General Workers' Union and the Association of Scientific, Technical and Managerial Staffs (ASTMS).
For additional information, you can refer to the article on the Anglers' Net website: Fred Fishes With... Martin Salter.
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