i got this info from the nrn website provided by a sajha pal. i forgot the link. last time when i checked it was 135,000 but recent influx of bhutanese refugees and students, that number might have gone up and i just provided an approximate number.

understand one thing, migration to US started in th mid-1990's while to UK, we have 200 yrs of history together.

and just for ur GK, Nepal opened its door to the foreign nations during 1950's only.

my number may be not exact but close. u can further investigate.