Room Wanted

Hello,
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I am a post graduate student studying in Central London. I currently have no job, because the situation for part time employment in London is very poor nowadays as all might know. I am an international student, and my tuition fees and living expenses are managed by my father who lives in Bangladesh.
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I am looking for a single room in any part within Greater London, provided there's ample transportation available for me to travel to my university. I am an introvert, yet friendly human being. I am a heterosexual man. I am looking for a single room, however if I were to share the room with a roommate, a female is preferred. Because I would really love to be friends with a woman.
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Thank you.