Design reviews such as those carried out by Cabe could be conducted on new buildings to ensure they are able to withstand terrorist attacks.

The move is one of a range of measures on the table after a confidential review of protective security was drawn up by Home Office minister Lord West.

The RIBA has been working with the government on drawing up the guidance, which will include masterclasses in designing secure buildings. Architects will also attend simulations to examine crowd reactions to terrorist attacks Richard Hastilow, chief executive of the RIBA, said design reviews could also be an option if the guidance isn’t followed.