ILEAnet is an H2020 project, aiming to build a sustainable organisational Law Enforcement Agency (LEA) practitioners network focused on research & innovation addressing LEA challenges, together with a community of individuals interested to exchange and collaborate in this area. By encouraging such discussion between practitioners and experts from academia and industry, the project will stimulate LEA capabilities to influence, develop and take up research, development and innovation (RDI) that is useful and usable for LEAs, and thus help them to tackle the major challenges they face. Scientists are crucial to answer LEAS' needs, and they are involved throughout the ILEAnet project.