Does the high society satirised in Vanity Fair in the 1840s still exist today? As the BBC1 adaptation of the classic novel continues on Sunday nights, Omnibus looks at parallels between then and now. Publicist Max Clifford explains how he would launch heroine Becky Sharp on the contemporary London scene, while writers John Mortimer, Nigella Lawson and Peter York look at the life of Vanity Fair author William Makepeace Thackeray, a self-confessed snob.