Protecting Crowded Places
The purpose of this guide is to give advice about counter-terrorism protective security design to anyone involved in the planning, design and development of the built environment.
Although this guide is 8 years old it is still current and will assist planning departments with what they should be considering for new developments. Some elements are out of date but all the key protective security principals still apply.
It is available to downloaded here Protecting crowded places: Design and technical issues