The Home Office is unable to report how long on average a caseworker responsible for processing asylum claims is in post for or the number of staff who are responsible for processing asylum claims across each of the last five years, as this information is not recorded and held in a reportable format. To obtain this information would require detailed reporting against multiple cost centres and could only be obtained at disproportionate costs.
However, the Home Office can provide the number of asylum case working staff for each of the last five years. This data can be found in ASY_04 of the published Transparency data:
In support of increasing the number of initial asylum decisions, the Home Office has recruitment strategies in place to increase staffing to more appropriate levels. We are working to almost double the number of decision makers to c.1000 by March 2022.