So this thread explains that you can in fact just get the bushing without replacing the entire wishbone.

Jaguar Forum.co.uk • View topic - The definitive wishbone bush thread

Is this the part in question?

04 2004 Jaguar XJR Control Arm Bushing - Suspension - Lemfoerder, Front Lower - PartsGeek

Thanks, Damian

Obviously the photo is not the actual part, but then it tells you this anyway. (phot not item specific)

Other than that, it seems correct description - "at frame end", i.e where the arm attaches to the front suspension subframe.

Hello Guys,

Were you able to get the bushing out of the ARM and a new bushing back in?

Kelly