Redirect .co.uk to .com

I have an existing non-wordpress site at http://www.martinwardphotography.co.uk which I pay a monthly fee for which I no longer really want.

I’ve got a .com site in place now (www.martinwardphotography.com) that I want to move forward with which is wordpress.

Now, how do I go about a a redirect towards my .com from the .co.uk? I would like to keep as much of my google rank as I’ve gained, someone said a 301 might work? My biggest bit of confusion is, when I stop my subscription I fear that they will take my .co.uk site away, although, I own the domain and the hosting…

Looking forward to any help!!