Roland,
The Chilean Air Force Commander-in-Chief at the time of the conflict, General Fernando Matthei, and other Chilean Air Force personnel have provided details of RAF C-130s and Nimrod R.1 operating from Chile.
http://www.pprune.org/7095219-post368.html
See following for link to videos of the Chilean documentary.
http://www.pprune.org/7097031-post396.html