What is the music from BBC advert for Great Expectations?

The music used in the BBC advert for Great Expectations is "The Great Expectations Theme" by Daniel Pemberton. This theme was specifically composed for the miniseries.

It's a beautiful, atmospheric piece of music that perfectly captures the mood and spirit of the story. You can find it on various music streaming services by searching for "Great Expectations Theme" or "Daniel Pemberton Great Expectations".