Andy, I visited quite a few competitive companies as a case officer for a government department. Confidentiality prevents me from revealing names. However the one linked below is no secret. There are many more, quite a lot these days in mining services - think how do you automate changing a wheel on a huge mining truck? An Australian company builds robots that do it. Another Australian company showed up GE in the machining of Inconel.
The chief characteristic of competitive companies is that they shut up about it in public.
ANCA - The World's Most Flexible Tool Grinder