Although taking the body off sounds fairly drastic both RRS and Discovery 3 and 4 and no doubt L405 FFRR are all designed for that to happen and it takes only a short while to undo the nuts and bolts, disconnect the cables and off it comes if you have the right hoist. Dealerships are used to doing now after so many years of Disco3 and I have been told that it takes an experienced workshop about 30 minutes to prepare the car for lifting off the body. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

Yes I agree , body off is not really a big deal but from experience it is what they find when it is removed that is usually the issue , they always seem to find something expensive going on !!!!