Government Ministers create the broad-brush health policy picture whilst civil servants (Ministers' officials) work up all the details necessary to implement the policy. Every two or three years, the Treasury announces how much money the Government will spend over a three-year period and allocates this money between various Government departments. It is then up to each Department to decide how it will spend its allocation. The Department of Health (DoH) assigns part of its budget to 150 or so Primary Care Trusts (PCTs), which are responsible for providing NHS services for their local populations. The DoH believes that each PCT should decide its own funding priorities and, beyond insisting that it implements NICE guidance on particular drugs or interventions (where it advises use of these) it generally will not interfere too much at local level on the detail of policy.There are, however, exceptions and stated Government policy is that no PCT should use the absence of NICE guidance as an excuse not to fund drugs of proven worth. The let out clause is that a PCT should still make decisions as to the healthcare it provides, ‘in the light of local needs’.