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


Price increases

1 January 2018

In July 2017, the Royal Mail increased the fee they require for the use of their addressing data. Arc en Ciel did not immediately pass on this increase to their clients, but economic forces require that we increase our end-user cost with effect from 1st January 2018.

The average increase is about 4%.



The Postal Museum

28 July 2017

Arc en Ciel is proud to be a Corporate Sponsor of the Postal Museum.

The museum opens today, and features fascinating exhibits covering the five centuries of the British postal system.  A highlight will be a ride on the miniature underground railway, the "Mail Rail" which carried post across London.





PAF exceeds 30m premises

15 June 2017

Following the coding of new construction,  the PAF (Postcode Address File) , today exceeded 30 million delivery points.  In addition, some of Arc en Ciel's products include the Multiple Residence dataset which gives details of the 185,000  properties which have been sub-divided into separate apartments and businesses.

The Royal Mail make up to 5,000 changes to PAF every day, ensuring that it remains the UK’s most accurate and up to date address database.

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Latest data issues

1 April 2018

Addressing data:

We are currently shipping the Royal Mail data for Quarter 2, 2018.
The Ordnance Survey data shipped with most of our products is for November 2017. 
If you are an existing user, you can visit www.arcenciel.com/updates and input your licence key to download the latest version of the software and data.