The past week or so, the anti-American tone has been amped up in a lot of the British media, let alone the Mail. But to their credit, they've managed to set the tone of the anti-American narrative pretty well by publishing a couple of minor or non-news stories like a few by this gentleman on the Americans destroying English (although he seems to not know that some of his examples are actually British words, grammar, etc., which have fallen out of favour in the UK):http://www.dailymail.co.uk/news/article ... offee.html
For instance monkey wrenches (adjustable spanners) were invented in Sheffield and given that name there. "Fall" was what most people here used to call "autumn", and "pavement" was originally where you drove, and not where you walked.
Don't get me wrong, I would love to see the differences stay. People who haven't lived long periods of time in both countries might not be able to see how culturally distinct the two countries are, and despite the globalisation of a lot of American culture (and vice versa) and the internet, you can't help but feel a bit cut off from one country when you're spending long periods in the other. His example of "geek" is pretty weak, because I bet most people of a certain age knew what it has come to mean long before it made it into the dictionaries in either country.
As for the BP thing, from what I can see, the rhetoric in the States isn't anti-British, but anti-big multi-national corporation. Again, there is the divide between the two countries culturally, and I can't access all the media from over there, but even the most left wing of the 24 hour news channels, MSNBC, seem to be very sensitive to the British, especially the pensioners. I just finished watching Olbermann, and I couldn't see any anti-British rhetoric. More like anti-BP stuff, which TBH, most people realise is a multi-national. They'd be behaving this way if it were Exxon (and did 20 years ago). Whether or not the response from the US government is appropriate, hypocritical, harmful to US and UK energy policies, appeal to populism, or whatever, it is definitely not xenophobia. But some of the response in the media here (and don't even get me started on the comment sections of the online editions) definitely is.
Americans actually have a really high opinion of Brits in general. This would be playing out pretty much the same no matter which country was the nominal country of ownership of the multi-national in question.