Originally Posted by
oxmatt
Please let's not pretend that it is only the UK but I am sure this is even true if you are continuing your journey on the same aircraft (e.g. the Air New Zealand flights that go via LAX).
This is true and has been given as the reason AirNZ fly London to NZ in both directions so as to allow those who are unable or who can't be bothered with US Immigration to aviod the USA.