Under "Travel And Criminal History" I answered the question "25. Have you been issued any visa for the UK, UK Overseas Territories or Commonwealth Country in the last 10 years?" in the negative.
However, I have been to Singapore & Malaysia (Commonwealth countries) and have mentioned the travel details under foreign travel. How do I make this error known to the relevant authorities?
Update: The student immigration office at my university has asked me to attach a cover letter that mentions these details. Whom should I address this to?