The letter Thomas Shelby sends to Sir Winston Churchill, at that point Secretary of State for the Colonies. The text is derived from the plot; the letter itself and Shelby Company Ltd. logo are created based on the assumption how such a letter could look like in given circumstances.

The layout is based on the examples of the official mail from 1920s posted on The National Archives webpage; Foolscap Folio paper format was common in the UK before the implementation of the ISO standard.