As far as I'm aware, there is no scholarships for undergraduate course in UK Universities. There are a few for Masters which is either 20% of extortionate amount that they charge or after you have completed the course with highest score in the class (which is rare for Nepali students here). There are a few scholarships for PHD though but to expect scholarships if you have applied for undergraduate course in university, be sure that you have 0.0000001 % chance of getting it.

Unlike UK, US is more welcoming to international students. So my suggestion will be to apply in US rather than in UK. University education is free in many European countries but language is a huge barrier in most of those countries and additionaly jobwise, it is very difficult to get even part-time jobs for international students there, especially if you are Asian.