The Royal Institute of British Architects (RIBA) has raised concerns over the role of counterterrorism security advisers (CTSAs), police experts who are consulted on the security of building applications.
RIBA has warned architects that major schemes could be rejected following scrutiny by CTSAs.
The institute raised concerns in response to new Home Office guidance that aims to ensure counterterrorism design measures are included in new buildings to help protect crowded places from attack.
RIBA is against the incorporation of police input at the planning stage and states that there is not enough consistent training of CTSAs and of local planning officers.
RIBA has urged the National Counter Terrorism Security Office (NaCTSO) to advise architects on how to mitigate biological and nuclear threats.