As part of its analysis, the committee will demand access to the unredacted contracts and its report will not be censored.

The watchdog has the power to demand access to all government documents, including confidential minutes of meetings where major contracts have been discussed.

There are also concerns that insurers will demand access to individuals' results, though a moratorium forbidding this was recently extended until 2017.

Inspectors can demand access to sites.

They can demand access from any organisation that might hold it, including employers and political parties.