I'm adding these details for anybody that may want them, but also as a reminder for myself, as finding this details on the one.com website is impossible and support is generally slow.
Here is how you can transfer a .co.uk domain name out of one.com services:
- Cancel your web space via the One.com chat/mail support.
- Request a TAG from the new provider.
- Send the TAG to using the registrant email address or use the IPS TAG change form:
Fill out the form and send back a manually signed copy (scanned or photographed) as an attachment to .
Upon checking with one.com, the 1st step of cancelling the web space, doesn't cancel immediately, it cancels the renewal