No problems with posting domains.
When you do the redirect, make sure it changes the domain in the address bar from the .com to the .co.uk
If it does, then you should be fine.
How are you doing the redirect? If you are using a hosting control panel, like cPanel, and 'parking' the .com on the .co.uk then you will also need to use an htaccess 301 redirect from the .com to the .co.uk