ABSTRACT
This chapter highlights the importance of 9/11 for our understanding of the enormity of the risks that global society faces and how such mega-terrorist risks and responses have become essentially 'deterritorialised' with security implications which spread far beyond the territorial scale. It also draws together accounts from a variety of academic traditions to critically highlight the rethinking of urbanism in the post 9/11 era. Since 9/11, the City of London has been under increased risk from terrorism with some reports even claiming that there was a detailed plan developed by al-Qaeda to bomb the Square Mile. The anti-terrorist security strategies employed in the City of London have been subject to both praise and criticism. The chapter concludes by summarising the key impacts of 9/11 on the City of London arguing that over the last decade this area, aided by specific morphological, institutional and technological advantages has successfully balanced the needs of security with the orderly flow of commerce.
