As part of the specification for personal independence payment (PIP) assessments, the two providers—Atos and Capita—must provide sufficient suitable accommodation for face-to-face consultations. Atos' delivery model utilises the premises of local supply chain partners already established in the health care sector and as such have access to large flexible network of sites—locations such as private medical centres, physiotherapy practices and hospitals. Atos have published details of 171 consultation centres on their website. The number of sites utilised by Atos for PIP consultations will fluctuate in line with the demand for assessments. Using the Department's forecast volumes of PIP assessments, Atos have demonstrated through their supply chain contractual arrangements that they have full geographic coverage with an additional capacity of at least 15% in each of their supply chain partners, as well as back up options across their network, should volumes prove higher than expected.