Mother's Milk - Edward St Aubyn
Having just finished the excellent Some Hope, which is no.3 in the Patrick Melrose series, I'm moving straight on to no.4. I do like his style. Some Hope centres around a dinner party featuring a cast of obnoxious poshos, including the thoroughly awful Princess Margaret (based on first hand knowledge, apparently), but it's much better than that makes it sound. Very funny, in a waspishly Waugh-esque kind of way.