thanks both - it looks like that article is exactly what I needed
Work was blocking the site earlier so I could not find the info out, but now it seems to be working.
Hopefully disabling the auto upload will mean that in the future they just sit on the Xbox then. Not sure about being able to get the ones that have already been uploaded
back on the xbox though. I'm going to read that link now.
Edit - reading that link suggests that nothing ever gets removed from your Xbox, just copied. So why cant I find any captures saved locally to my Xbox that are more than 30 days old?