Sadly, I have not read any of Thackeray's work, so I am unable to comment on the faithfulness of the adaptation. What I can say however is that the programme was enjoyable. It was an entertaining and amusing work, although not necessarily something that will make you laugh out loud.
Mind you, it is to be expected. It is a period piece that is also satirical. If satirical jokes go out of date over the course of a few days or weeks, not many people will understand the references made in work published in 1837. However, that is not to say that this show should be avoided. It is a pleasurable listen.Ian Dunn, One Giant Leap, 12th February 2009