I intend to register the co.uk version of my website and redirect to the .com, my question is can I register a co.uk website on bravenet somehow? And if not can I register elsewhere an host it here?
You can not register a co.uk domain here at Bravenet. But you can registered it somewhere else and then add it as an external domain in your Bravenet account. You then go back to where you registered your domain and change the name servers that are provided when in your Bravenet account.