Thanks Ian the scratch is deep enough not to polish out conventionaly so will need wet sanding or a respray.
Thanks for the link looks like a very viable option that software; With regards to public footage capture my garden is a little longer than the A8 (about a foot or so), then theres the pavement and behind that the access drive way wich is long enough to park another LWB A8. Perhaps if I angle the cameras I can get the cars covered without protruding into any decent folks lives; all I'm concerned with is with footage of any potential vandal feckers.
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