The Tories invented the CPRS, but Labour Ministers first recruited special - or political - advisers to supplement or counterbalance the advice they got from civil servants. Now Margaret Thatcher has abolished the CPRS, but increased the amount of policy advice available to individual Ministers - particularly herself.

dx.doi.org/10.1080/09540968309387237
Chartered Institute of Public Finance and Accountancy. Public Money

Shepherd, R. (1983). Ministers and special advisers: Tilting the balance away from cabinet. Chartered Institute of Public Finance and Accountancy. Public Money, 3(3), 33–35. doi:10.1080/09540968309387237