Case Studies and Media Case Studies and tuServ Videos. Vision 2020: Developing Specialist and Digital Capabilities at the Police Federation Annual Conference 2016 Cambridgeshire Constabulary on the tuServ Notebook Discussing the benefits of using the Electronic Notebook in tuServ. Cambridgeshire Constabulary and tuServ Video highlighting the reasons why, and the benefits of using tuServ for Cambridgeshire Constabulary. Intel - Performance, security and reliability to mobilise police data and connect police officers. Integrity, Trust and Public Safety.