It's a sarcastic remark aimed at the fact that historically, it's been working class areas that get flattened to make way for new rail development, and yet when it impacts on the better-off, we hear shrieks and wails in the media about how The Hon. Tristram Fudge-Packer will lose the bottom 400 (IIRC one of the papers did a 5 page spread on a load of "county set"-types who were being oppressed by HS2), but bugger all about how "ordinary people" are being affected.
Now, as I recall, about 90 toff homes or their grounds will be affected, according to what someone posted earlier in the thread. Me, I'm not particularly bothered about 90 people having hassle, when others who'll be affected, but don't have the social capital to get their complaints paid attention to, don't have the same forum for their issues about the line.
BTW, £1.5 million in the Chilterns? Are they living in a bothy?