Robbo101

Just purchased a 2004 S-type and discovered the locking wheel nut key is missing. Does anyone know if there's a master locking wheel nut key for the S-type? I've been told there are 26 variants of locking wheel nut key and as each costs around £25 buying each until I found the right one would be an expensive way of doing it. Alternatively, does anyone know if I might discover the right key using the VIN number? Any assistance much welcome. Thanks.