Bosch Pressure Washer (Cheadle Hulme SK8)

Aquatak 10 compact pressure washer. It works but the motor does not switch off when the trigger is released because of the snapped white plastic part, see photo.
I have contacted Bosch to attempt to get a new part but they don’t supply them, I was not impressed!
If more than one person responds I will do a draw to decide who gets it.