Hello Hannah,

The Association of Jewish Refugees has case files of the Kindertransport children.  You need to submit a request online to see if a file exists for a specific person.  The online form is at https://www.worldjewishrelief.org/about-us/your-family-history.

Find My Past digitized related records from the British National Archives.  You can search for a name for free at https://search.findmypast.com/search-world-Records/kindertransport but they charge to get copies of the actual documents.

-Megan Lewis, United States Holocaust Memorial Museum