To transfer a domain away from Fast2host, Login to the client area at https://www.fast2host.com/clientarea.php
Select "My Domains"
For the domain you wish to transfer, Select "More Options"
Here you can unlock the domain and generate EPP Code. You can also check/modify the contact details to ensure that your receive the transfer authorisation emails.
You then need to initiate the transfer at the new registrar.
To transfer .co.uk domains, you need to submit a ticket to email@example.com with the domain name and the new IPS tag.