What does postcode mean in UK?

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Tags

1. #united
2. #between
3. #seven
4. #sorting
5. #define
6. #kingdom
7. #levels
8. #royal
9. #different
10. #system
11. #geographic
12. #across
13. #combination
14. #coding
15. #which
16. #postcode
17. #letters
18. #created
19. #numbers