Brentwood currently has 23 mapped postboxes recorded by The Postbox Hunter. The postboxes in Brentwood include 3 recorded royal cyphers. The most common is EIIR, recorded on 6 postboxes, representing 26.1% of the mapped total. The complete recorded cypher list is: EIIR (6), GR (2) and yes (1). The most commonly recorded postbox type is Pillar, with 10 mapped examples. The data contains 2 different recorded postbox types. Across the available tagging data, 3 designs and 1 colour are represented. The most frequently recorded colour is Red, appearing on 1 mapped postbox. This information is generated from the latest postbox location and tagging data available to The Postbox Hunter.