postal-logistics

Royal Mail 4-State Customer Code (RM4SCC) (Royal Mail 4-State)

4-state height-modulated linear symbology utilized throughout the United Kingdom and international sorting hubs for automated letter and packet routing with integrated checksum.

Governing Specification: Royal Mail Customer Barcode Specification

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Data Format & Required Fields

Encodes UK outward/inward postcodes and Delivery Point Suffix (DPS) using start/stop framing bars and variable tracker/ascender/descender states.

Allowed Character SetUppercase letters and digits representing UK postcode and delivery point suffix.

Payload Length Rule Between 4 and 12 characters

Example Valid FormatSN34RD1A

Industry Guidance & Practical Applications

UK domestic letter mail address automation (Royal Mail Cleanmail)
Direct mail marketing and transactional billing in the UK
Small parcel routing across British sorting facilities

Packaging & Scanning Notes: Offers postal rate discounts for businesses pre-sorting mail with valid DPS codes.

Symbol Constraints & Label Guidelines

Strictly 4-state vertical modulation; requires postal line-scan sorting optics.