I had a look at that and they seem to want £5.99 for a code.
I did some searching, and found a free app for android phones
M & V-Series – Apps on Google Play
I did some quick tests, and a sample s/n seemed to give the right code.
note, to use these tools, you need the radio serial number, printed on the unit, but some units will display it by pressing the 1&6 key or 2&6 keys on the front together.
if you don't have an android device, (or just don't want to install unknown software), the tell us the s/n and I shall see what it says.
ps most Ford radios are now keyed to the VIN, and do not have a code.
pps, you may also find the code in the original dealer pack if you have that.