Rapid Addressing

Put in the postcode - Get the address

Address Management

Rapid addressing; postcode identification and more

Mailing List Generation

Build mailing lists for bulk mailing for free

Web Use

Get a visitor's address and position from their postcode

Where's My Nearest?

Find the local branches of a business

Map Referencing

Pinpoint the map position of postcode


Postal codes and addresses for the Republic of Ireland


Location Software, Address Management & Postcode Address Software

The UK has the world's best postal code system. Every postcode (with very rare exceptions) is associated with a single street. Because of this accuracy postcodes have exploded out of their original role and are used in many fields such as administration, marketing and statistics.

Further, because of its short length and mnemonic form – "CB" is the prefix for the Cambridge area for instance – it's easy to remember.

Arc en Ciel Ltd uses the official Royal Mail data and other leading data sets to produce a range of Address Management Software, Location Software & Postcode Address Software.