I have added links to Approved Planning Briefs on the left hand side bar. Many of them are for The Hillgate Initiative (THI), but there are other sites, including Hopes Carr.
They are quite long, but are worth browsing if only for the photos and historical titbits.
Am I right in thinking that Hempshaw Brook, is also known as Tin Brook? May be Grace has this covered already and it's probably too late to add anything to the draft of her book on Tin Brook. I don't know what this means exactly, but the Hopes Carr Planning Brief says that Hempshaw Brook may be re-classified by the Environmental Agency as a 'main river'. This would mean that should be no development or tree removal within 8m of the 'river'.
Steve, we were talking about the Cheadle Literary Institute as we passed it on our returning from our Mersey walk. Well there is an approved Planning Brief. I also found this. It reckons that the Institute, built in 1887, is one of only two buildings in Britain to be designed by a woman in this era. It's on a fascinating site, Save Britain's Heritage, unfortunately it's over a year since it was last updated.