About the most irritating bunch of losers you'll ever come across. A. A. Gill has them pegged:

Brits are rarely seen in New York without their magic cloaks of invisible ironythey think that, on a fundamental level, their calling here is as irony missionaries. They bless everything and everyone with the little flick quotation marks, that rabbit-ear genuflection of cool, ironic sterility. How often their mocking conversations about the natives return to the amusing truth that New Yorkers have an unbelievable, ridiculous irony deficiency, which ignores the fact that a city that produced Dorothy Parker, Robert Mapplethorpe, Abstract Expressionism, Woody Allen, and Woody Allen's love life has quite enough irony to build the Brooklyn Bridge.

The whole piece is a treat.