That is hardly an accurate representation of British people.
In my experience of living in the UK for 45 years, I'm not aware of any nation wide hatred of American people.
Sorry for coming off as racist or mean, I shouldn't of said what I said, but that has been my impression of the British people I have met being at the British School. Granted some are sorta snobby...many arent and they are quite nice, but have made remarks about Yanks to me