Sorry to be after everyone else, I've been out of the area for a week until yesterday. Like others I've personally checked the Marple car parks and all have the concession notice on them but still with Marple omitted. I've written to the relevant officer at Stockport Council to point this out and ask what they can do to correct it.
As others pointed out Brabyns Brow is always free so there are no notices needed, but the two at the end of Longhurst Lane by Town street will be covered - I'll double check once the flood has subsided.