Where can I get one of these...?

Hello.

Passenger door got locked shut. Wouldn't unlock on central locking or key.

Took the handle trim off and found the rod has snapped off the lock thing inside. Managed to pull it with pliers and open the door. Got the door card off and removed it.

So question is where can I buy one of these??

2nd hand from a scrappy or a breaker?

As above, AFAIK they are the same across all EK models so you should be able to get one easily and fairly cheap too I'd imagine