This series of papers is from a later accession, from the family home in Norfolk. This series is significantly different from the rest of the Cockcroft Papers, as it is Sir John and Elizabeth Cockcroft's personal papers. Therefore, the majority of the material did not fit in with the existing catalogue. The material in this series includes: personal correspondence, diaries, scrapbooks and photographs.

Whilst the majority of the accession is in this series, some of the material did link with the original catalogue, and it has been added into some of the existing series. This will be indicated in the catalogue where this has been done.