TV standards in Europe are something of a minefield for the non-technical person, as there are so many variations in such a relatively small region as one crosses international borders. Even between the U.K. and Ireland, which are both the same basic standard (PAL system I) there are complications in the tuners, and prior to 1985 Britain actually had two different broadcast standards in use!
North America is much simpler, with the same standard used in the U.S., Canada, Mexico, almost all of the Caribbean, and beyond (DVD region coding excepted).