I agree with JenB that the location is Dalry Mills.
As the other addresses in the list are recognisable as being in Edinburgh, I assume that Dalry Mills were there, too, and not in the Ayrshire(?) Dalry. A Google search shows Dalry / Murrayfield mills in Edinburgh as paper mills, but the occupation of currier is to do with dressing tanned leather, I think. Would paper milling and leather preparation have gone on in the same premises?
Hope I haven’t confused the issue! But I have confused myself! 😳
Ax