Spokes have been working on a survey on cycle parking in supermarkets, one of the aims is to make technical guidelines for good quality cycle parking.
I didn't find much on the CEoGB resources apart from theses pdfs:
http://www.cycling-embassy.org.uk/document/cycle-parking-info-sheet
http://www.cycling-embassy.org.uk/document/c04-cycle-parking
Should the Embassy aim to have their own factsheet/guide on cycle parking? On good rack design, ones to avoid and where place them. We can use this thread to share ideas! In general the pdfs mentioned reccomend sheffield stands, with some rain shelter and suitable spacing between the racks. They don't mention much about double tier racks,
Hembrow likes tulip stands, I've not had the chance to use them yet...