Coming up on Sunday 2nd September, 9am on Radio 4 Extra is an adaptation of The Railway Children by E Nesbit, in 4 parts. Air dates of other parts currently unknown but I would expect to be either over the 3 weeks, or 3 days following transmission of part 1.
Hope they do this drama like the BBC did Swallows and Amazons... nice to have character voices I feel rather than a audio-book format.