This article analyses the recent expansion of immigration offences in Britain. Drawing on criminal law scholarship, it considers the reasons for relying on the criminal law in immigration enforcement. On the one hand, criminal law is used symbolically. In this view, the creation of criminal offences may be read as an attempt to appease a sector of the electorate, the media and the Opposition about the ‘immigration problem.’ By introducing these offences, the government sent a message that the situation is under control. On the other hand, the criminal law serves regulatory functions, offering the UK Border Agency a range of options for dealing with unwanted immigrants. In practice, most immigration offences are rarely enforced. Instead, the...