English pronunciation of “up to”

up to

uk How to pronounce up to adverb in British English
us How to pronounce up to adverb in American English
uk How to pronounce up to preposition in British English
us How to pronounce up to preposition in American English

(English pronunciations of “up to” from the Cambridge Advanced Learner’s Dictionary & Thesaurus and from the Cambridge Academic Content Dictionary, both sources © Cambridge University Press)