Most recent data (except for EI, which is available for 18/19) is from 17/18. (EI data is hosted in a separate section of website: https://www.pkc.gov.uk/equalitiesmonitoring)
GPG provides data and content for gender pay gap, and states: "Analysis is undertaken on all the protected characteristics (age, age/gender, disability and ethnicity) and there was no cause for concern."
Unlike the document in the 2017 sheet for this body (where there was a document labelled "Mainstreaming Report"), the document in Column H/I is styled as "Equalities Performance Report" as is only as recent as 2017/18. However, it appears to be what PKC is putting forward as the most recent MSR.
No readily accessible OS data.