KBY, Universities in the United Kingdom and particularly at London offer very few scholarships to foreign students. And its very rare to find one for undergraduate courses. As far as I know, there are some Nepalese studying in scholarship at Westminster, Metropolitan, Southbank, LSE, City University in London. Nepal is in the priority list for a couple of scholarships in the first two universities I have mentioned. As you have already secured approval for your admission, why not you contact the admin and the faculty asking for scholarship or full or partial fee exemption, explaining your problems and inability? If you can make a good case, presenting a strong academic ground as well as some good reasons for fee exemption, you might be successful. I think its the University and the department itself that can help for your cause. Try your luck but its hard to get it. All the best :)