Uk's Postal Service, Not Just for the King/queen
This page is the CodyCross answer for the clue below from Top Secret, Group 2082, Puzzle 3 (Clandestine Meeting).
Question is: Uk's Postal Service, Not Just for the King/queen
and the answer is: ROYALMAIL
Word Meaning:
ROYAL — Of or relating to a monarch or his (or her) family.
Definitions from Wiktionary.