There’s a long piece by Grey Gowrie on “The End of Dance” in the June 2011 issue of Standpoint magazine. It is printed in full at http://standpointmag.co.uk/node/3937/full. Although I’ve not yet read it (I'm keeping that pleasure for this evening) it looks as if it is heavily based on Lord Gowrie’s 2010 Anthony Powell Lecture (19 November 2010 at The Wallace Collection).
[Note: The text in the online version is correct. Apparently two pages in the print version were transposed.]