1. A computer system to provide a set of computer generated interfaces for presenting evidentiary information to users of a secure user group, 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 a first interface of at least one user a summary of the set of items in the order; to receive a request from the at least one user using the first interface to present the items in the order, and following receipt of a request to present an item, to access the data store to automatically send to the interfaces of the other users of the secure user group the item for presentation on the other interfaces in the order.