Finance Bill

In the absence of the Government showing any willingness to take the bull by the horns on tax simplification, how can we get them to part with the information that they say they have on the continual review on tax reliefs? I have not been an MP for very long, but it strikes me that there is a failure in the system if we are not seeing the transparency that we need. If the Government are actually doing these reviews but not providing their working to the Committees or to Opposition MPs, that strikes me as a failure in the system. How can we get them to part with that information?