Trying to steer a little back on topic with some info for whoever may one day need it...
Trailing arms were easy once i'd got the bolt out. Undo the bottom shock absorber bolt and push it up out of the way. Release height sensor from rubber mount on the trailing arm. Stand under axle off centre towards the side you're working, jack just behind wheel hub, Axle stand under chassis next to where the bolt goes through the bush. Take the wheel off. It's easier to get at the axle bolt behind the shock absorber.
Not sure if it would apply to everyone but i have side steps and I had to cut a notch out of the inside of the step in order to undo the bolt all the way out of the bush in order to drop the arm.
The trailing arm bushes i used were by FloFlex and are a perfect fit. They are a 2 part bush cut at an angle as seen in the picture.
If you have a stuck axle bolt, then God be with you trying to get it out. lol. The part number for a replacement is ANR3313 but is discontinued by Landrover. John Craddock have a couple but they're £12. If you want to source your own cheaper, its a 125mm M12 Flanged head bolt, half thread with a tensile strength of 10.9.
Hope this helps someone. :-)