I own a domain (andypiper.co.uk – couldn’t get the .com), which I registered several years ago via UK2.net. It did already redirect here, via some stuff hosted on the UK2 servers.
I just flipped the DNS settings to enable the domain to be registered on the wordpress.com servers. Hopefully readers won’t notice the change. You can continue to get here via andypiper.wordpress.com, or you can use andypiper.co.uk if you prefer. Just don’t try the .com version, it isn’t mine 🙁