I am old enough to remember the TV version of 1968, and have read the books several times. I am currently re-reading more or less at the same pace as the radio version, which is broadcast daily at the end of Woman's Hour.
Some incidents have been embellished, others reduced; they are certainly galloping along.
What puzzles me is how they are going to make it last for two years at this rapid rate.
I know the saga is in three parts, the 1968 version only dramatised the first two, but even so.