An A-Level in Computer Science is useful for all kinds of careers, whether it be a career in computing such as software development, programming, network engineering, web design, cyber security or ethical hacking, or a career in business, science, technology, engineering or mathematics.
A Level Politics will teach you how to structure argument and debate, how to analyse sources and evidence, and how to communicate persuasively. These are all skills that are invaluable in a wide range of university courses such as politics, political studies, political history, literature, business, sociology or international relations.