Hanna, allow me to disagree, a little bit! In my experience, a great many not-very-elegant speakers of English, on both sides of the Atlantic, are able to SPEAK the phrase "пикт май кьюриосити" (using Cyrillic transcription because I don't know the proper IPA characters!). But on both sides of the Atlantic, people who are less educated will use the written spelling "peaked my curiosity" or "peeked my curiosity" -- when, as you know, the correct spelling is "piqued." (If I'm not mistaken, the word originally meant something like "колоть иголкой")
Just to re-emphasize the point: the SPOKEN phrase will sometimes be heard even at lower levels of education, in both the US and the UK -- but in all dialects of English, it's relatively rare to find someone who knows the correct spelling -- even well-educated people often use the spelling "peaked."