A law has passed in Brazil some months ago, demanding all government's spending to be published online, in a unified database. This law originated the website http://transparencia.gov.br/, which I believe has some interesting features that can help the Cabinet Office when deciding which direction to take regarding this issue. I believe this website is a huge step in Brazil's transparency policies; however, there still is a lot of room for improvement. For example, we couldn't yet convince the whole Judiciary system to make their reports available on this site.
Since I work for a federal agency in Brazil, feel free to contact me if you need any help with the Portuguese or if you want to know more about this initiative.
,To join up the various agencies, organisations, services and individuals that need to interact with citizens, it is necessary to construct a database which is centred on the citizen and which, through the Cloud, is accessible to all service (and potential) service providers. To avoid the Data Protection barriers that currently inhibit the sharing of sensitive data in the Cloud, this database will instead act as an index to enable the rapid location of the most recently updated data. However, to achieve this a data architecture that specifies standard record and field taxonomies should be developed. In this way, anyone with authorised access will be able rapidly to access the information they need about a citizen