I don' t know if the systems have been "aligned" under the EU, but in the days when I played inside television sets, the sound intercarrier frequency was different between the UK and everywhere else.
Still not aligned, but with modern TVs the cost of making the set multi-system and auto-tuning is miniscule and allows the same basic model to be shipped world-wide.
There may be an LCD TV out there that isn't, but I doubt it.