Change your domain registration WHOIS Contact Information
If your domain is registered through Acenet, please follow these instructions to update your whois contact information.
[1] Login to your Client Area
[2] Click the My Domains tab (top menu bar)
[3] Click the View Details icon to the right of your domain name
[4] Scroll to the bottom of the next page
[5] Click the Contact Information button under Management Tools.
You may enter any contact information of your choosing. Please note that it may take several hours before the changes propagate the internet and appear online.
For .UK domains, all WHOIS information would need to be changed through Nominet (www.nominet.org.uk). Here is Nominet's link on how the registrant correction procedure works:
http://www.nominet.org.uk/uk-domain-names/manage-your-domain/transfer/transfers-dissolved-companies