This is where the internet is a wonderful thing. Accidentally removed the wrong fuse when fault finding something and the radio lost its code. No code in my handbook and advice was to contact a dealer, but being Sunday that meant no radio for at least a day. Quick search online found Online Radio Codes. Followed their advice on how to find radio serial number through the radio's display, entered the code into the website, paid the money, got the unlock code and within 20 minutes of me pulling the fuse the radio was restored back to life! Great as it is though, the unlock code is now recorded and saved in several places!