Data Appending FAQ

What is data appending? Data appending is the process of filling in the gaps on your database such as email addresses, telephone numbers, postal information and other information. Using our data append universe we can help provide you with the information you are missing. Common data appending projects include: Business data – Email, Alternative Contacts, Postal, Telephone, Company Information Consumer data – Email, Postal, Telephone, Mobile, Demographic Information.

Can you append other information? Yes. If there is anything you are missing on your database such as the use of a particular technology, social media information or anything you see as an important/valuable field to hold on your database, contact our team. They will be able to let you know if this is something we can help with or will offer the advice on where this could be sourced.

How do I supply my data? You can supply your data in any spreadsheet format, however we would prefer CSV or .txt format. We recommend you transfer data to us via our online portal:

How is my data kept secure? We take data security very seriously and advise that both parties should sign an NDA. A copy of our NDA is available upon request. We are happy to make amendments to this and/or sign your NDA as well to ensure you are satisfied. Data should be transferred using a secure portal. We store data securely and only for the time taken to perform the agreed work before destroying it.

How long does data appending take? Depending on volume an append can take up to 14 working days to complete. On average, we see files returned in less than 10 working days.

How is my data returned? We transfer data through a secure online portal, in the same way we advise you send it to us. We return your data in the same format and layout you supply it to us, with the addition of any new information appended in the form of extra columns within your datasheet.

Is the information opted in? All information we append to a file meets or exceeds all legislation pertaining to that type of data.

How much does it cost to append information? Each element of data is charged differently according to the difficulty and volume appended to each file. Please see each section on Consumer Data or Business Data pages for starting prices. If you have a particularly large file, or a niche requirement, please contact us on

Is there a minimum charge? Yes, our minimum charges are stated on our information pages. Please see each section on Consumer Data or Business Data pages for minimum orders.

I have other questions, who do I talk to? Speak to our team by calling 0845 226 7181 or email