Step 1
Get an approval code: Check with your new registrar to check whether you require an approval code (EPP code). In the event that you require one, see Get an approval code to exchange my space to another registrar .
Many country-code top-level domain names (ccTLDs) don't require an authorization code. However, there are a few exceptions where you'll need to contact customer support to get an authorization code. For more information, see Authorization codes to transfer ccTLDs
For .uk domain transfers, please contact customer support and have the IPS tag of the new registrar (get this from your new registrar) ready when you call them.
Step 2
Start the exchange: At the new registrar, start the exchange and give the approval code, if necessary. This is distinctive for every registrar, so you may need to counsel the other registrar's assistance or support for particular guidelines.