Driver side passenger door actuator

[Nicky]

Driver side passenger door actuator flaky, anyone seen/done repaired this,
and parts required please.

[Arapiles]

Had to get the LHS front passenger one replaced - occurred just out of warranty. Dealer charged, from memory, over $500.

[Eric SDV6SE]

Replacement actuators are available from the regular UK suppliers, or eBay. I still have one on my shelf for the drivers door once that goes.

[BradC]

I've done it by removing and servicing the lock motor. I've also done it by replacing the lock motor.
Haven't had to replace the complete actuator yet.

If you aren't particularly mechanically inclined, just get a new one.