Category:Post boxes in the United Kingdom by reign

• Post boxes in the United Kingdom with unknown royal cypher‎ (empty)
• Post boxes in the United Kingdom without a royal cypher‎ (3 C, 17 F)

*

• Post boxes in England by reign‎ (16 C)
• Post boxes in Northern Ireland by reign‎ (6 C)
• Post boxes in Scotland by reign‎ (6 C)
• Post boxes in Wales by reign‎ (6 C)

E

• King Edward VII post boxes in the United Kingdom‎ (4 C)
• King Edward VIII post boxes in the United Kingdom‎ (5 C, 1 F)
• Queen Elizabeth II post boxes in the United Kingdom‎ (6 C, 3 F)

G

• King George V post boxes in the United Kingdom‎ (4 C, 40 F)
• King George VI post boxes in the United Kingdom‎ (4 C)

S

• Scots crown post boxes in the United Kingdom‎ (1 C, 4 F)

V

• Queen Victoria post boxes in the United Kingdom‎ (6 C, 1 F)