Hi I'm new to this site I have a 2000 p38 which I love for the last 18 months its developed chattering locks syndrome I've changed both front locks mechanism worked OK for 2 days changed rear door activation device ok for 2 days I'm completely baffled it's been in numerous garages in North London to no avail

Hello and welcome to the mad house

Best to ask over in the range rover section of the forum
https://www.landyzone.co.uk/forum/range-rover.10/
check your wiring on the tailgate switch and to the drivers door lock as it is earthed through the doorlock