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.
4:18 PM 17, Jan 2018 Jan Zeber
11:10 AM 14, Dec 2017 Jan Zeber
10:35 AM 13, Dec 2017 The TaxPayers' Alliance
1:58 PM 20, Nov 2017 Ben Ramanauskas
3:14 PM 14, Nov 2017 Ben Ramanauskas
1:44 PM 06, Nov 2017 Duncan Simpson