The last 10 to 15 years has seen a significant increase in criminal enforcement against companies, and an increase in co-operation between states when investigating and prosecuting corporate crime. As a result, multi-jurisdictional companies (and their employees) are at greater risk than ever of becoming involved in a criminal investigation, whether as a suspect or a witness. It is therefore important that companies and their employees are aware of the process that will be followed if they are required to provide evidence as part of a criminal investigation, and how best to prepare for that process.