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.
4:04 PM 26, Jun 2017 Jan Zeber
3:42 PM 26, Jun 2017 The TaxPayers' Alliance
3:35 PM 26, Jun 2017 The TaxPayers' Alliance
3:31 PM 26, Jun 2017 The TaxPayers' Alliance
12:46 PM 26, Jun 2017 Harry Davis
1:00 AM 21, Jun 2017 Alex Wild