If you have +3000 hours and 1500 hours or more in command (PIC) on aircraft 30,000 kg or more then you only need to do 2 exams.
However, it is only valid for G-reg aircraft (ie UK) if you want to fly a D-reg or any thing else, you'll need to do the 14 ATPL exams.
See LASORS Section G 1.5 Note 2.
Note 1 you should read. That will be applicable.
I did it from an Australian ATPL, it was worth it in the end...