PPS 6 Planning Archaeology and the Built Heritage·Page 62·E23
Shop Blinds and Security Grilles
Retractable canvas apron blinds are characteristic of historic shopfronts and should be retained. External steel roller shutters are unsuitable; acceptable alternatives include laminated glass and internal shutters.
Retractable apron blinds covered in canvas are often characteristic features of historic shopfronts and should be retained. Modern plastic canopies are not acceptable. External steel roller shutters are not suitable for historic shopfronts. Acceptable alternatives include laminated glass and internal shutters.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 6 - Planning Archaeology and the Built Heritage.pdf