Criticism of the Work Capability Assessment oversaw the study" and named the lead experts as a professor of psychiatry, a consultant psychiatrist in learning disability, a professor of rheumatology, and an expert in human resources. The review's conclusion was that "the WCA produced consistent results on the whole, and is an accurate indicator of work capability compared with expert opinion". But the following year the firm that had carried out millions of WCAs on behalf of the DWP since 2008 said it had come to the conclusion that "in its current form, the WCA is not working for claimants, for DWP or for Atos Healthcare". The
Criticism of the Work Capability Assessment Professor Paul Gregg, an economist and one of the original architects of ESA, warned that the WCA was "badly malfunctioning" and urged further pilot studies before the new version was used to retest existing sickness benefit recipients. Three months later, six experts in mental health — including the chief executive of MIND, who was already a senior advisor to the DWP on the WCA — wrote to "The Guardian" to say that the test was "deeply flawed". In 2013, the DWP published an 'evidence-based review' of the WCA. The department said "a steering group of experts chaired by Professor Harrington