1. A computer system to provide a set of computer generated interfaces for presenting evidentiary information to users of a secure user group, wherein each and every one of the computer generated interfaces are operable to receive a request from a user to present one or more items of evidentiary information, the computer system comprising: a data store to store a set of items of evidentiary information and an indication of the order of the items within the set; and a processor to access the data store to send to all the interfaces a summary of the set of items to receive a request via any one of the interfaces to present one or more of the items, and following receipt of a request to present one or more of the items, to access the data store to automatically send the one or more items to the interfaces of all the users of the secure user group for presentation.