Without a key you really are in a bit of bother. Ford may still have the key number on file so you can get a key cut that will work in the ignition and door locks, but then you will need to have it programmed to disengage the immobiliser before it will start.

Failing that you could bypass the immobiliser ( i beleive it cuts the fuel pump so run a switched live feed to the pump, then it would be a case of breaking the steering lock and starting it with a screw driver.

Another option would be to buy yourself a second hand lock set off ebay or similar, this will have all door locks, ignition barrel and fuel cap lock, with keys, however you would still need to bypass the immobiliser.