Henley-on-Thames currently has 28 mapped postboxes recorded by The Postbox Hunter. The postboxes in Henley-on-Thames include 5 recorded royal cyphers. The most common is EIIR, recorded on 7 postboxes, representing 25% of the mapped total. The complete recorded cypher list is: EIIR (7), GR (5), EVIIR (1), GVIR (1) and no (1). Among the recognised royal cyphers in the data, EVIIR is the earliest recorded and EIIR is the most recent. The most commonly recorded postbox type is Pillar, with 7 mapped examples. The data contains 3 different recorded postbox types. Across the available tagging data, 1 design and 1 colour are represented. The most frequently recorded colour is Gold, appearing on 1 mapped postbox. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.