“The class that created the Labour Party [i.e. “the traditional working class”] no longer exists in any sizable number in Britain. This was identified twenty-plus years ago by Hobsbawm, et al.” [emphasis added]
I’m assuming that the book being referred to here is Eric Hobsbawm, The Forward March of Labour Halted? (Verso, 1981), and I’ll give a small prize to the first person who gives me a reference to a page on which something even vaguely approximating this claim can be found.