The Department is testing improvements to the how it decides disability benefits using functional health assessments by developing the new health assessment service and the PIP application service within health transformation areas located in London and Birmingham. It told us that part of the testing would look at how it can “make it clearer up front what it is that customers need to be telling [it], what [it is] looking for and what evidence is relevant to help [the Department] to get the decision right first time”.51 We heard that the Department intends to scale the testing into the contracts it will sign with interim providers, to include up to 20% of all new claims by 2026. The Department explained that it will need to work with providers and its evaluation team to determine what areas of the country it needs to expand testing into get the data it needs for a representative sample.52