Gyles Brandreth has been investigating what we can and can't find out courtesy of the Freedom of Information Act .
Using FOI laws, there have been hundreds of thousands of requests for information held by public authorities. Each and every one costs taxpayers' money to investigate.
For more information on making a request for information visit The Information Commissioner's Office - the UK's independent authority on access to information.
The BBC has a blog about FOI here.
In the film, Gyles spoke to Kate Spall about the battle to get treatment for her mother, Pamela Northcott. More info here.
Is the Freedom of Information Act working? Have you made a request for information? Would you recommend the process?