Despite much vaunted efficiency drives across Whitehall, departments continue to pay vastly differing prices for basic items such as A4 paper and energy.
The differences between departments' basic procurement costs remain even after the Efficiency Review by Sir Philip Green in October 2010 which highlighted the problem.
The TaxPayers' Alliance have the latest data on this problem from 2011.
2:56 PM 29, Sep 2016 Tom Banks
4:10 PM 28, Sep 2016 The TaxPayers' Alliance
2:08 PM 22, Sep 2016 Sunny Chen
5:12 PM 15, Sep 2016 Dia Chakravarty
3:49 PM 15, Sep 2016 Sunny Chen
11:39 AM 15, Sep 2016 Tom Banks