Aged 10 Siraj Khan set off to see his uncle in Karachi. But along the way he boarded the wrong train by accident. That single mistake would transform the rest of his life. Show more
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Aged 10 Siraj Khan set off to see his uncle in Karachi. But along the way he boarded the wrong train by accident. That single mistake would transform the rest of his life. Show more
The BBC's international radio station
