Since September 11, many cities have undergone significant changes in both morphology and management as a result of the greater perceived risk of terrorist attack. Such changes have often sought to territorialise the city through the redesign of space and the modernisation of management systems. More recently, such 'resilience' planning is becoming increasingly focused upon how the general public can assist this securitisation process by becoming better prepared and more responsible for their personal risk management. To illustrate these processes, a case study of Manchester, UK, between 1996 and 2006 will be used to indicate how these operational changes are having impacts on the rebordering of the city and upon broader issues of citizenship. The paper also questions how greater public acceptability can be achieved within urban security strategies.