door lock actuating plates

Can't open drivers door with key since we have had it, and now the weather is better had a look on saturday and found that of the two plastic actuator discs on the back of the barrel the one that moves with the barrel and eventually moves the other which operates the lock (hope that makes sense)
was broken so did not move with the barrel.
having searched and found several old threads asking where these bits can be obtained, with the usual type of replies:blabla::blabla::blabla::doh: I just thought I would ask if anyone has ever found a supplier?