@KompetentKrew - did you receive a reply about this mate?I have a Pelagic tiller pilot actuator / arm, which I used to replace the Raymarine equivalent, QO47.
The Pelagic works perfectly with my Raymarine SmartPilot autopilot controller, and I believe with the newer Evo, too. It's handled force 7+ just fine, and I've crossed Biscay with it.
The Pelagic appears to be a rebadged Chinese industrial actuator, and I wrote this week to the suppler on made-in-china.com to see about getting a spare. I will update the forum when I have more information, but the headline price appears to be only £40.