Was the crash in Walvis Bay? I typed in "air crash" on the Pathe search engine http://www.itnarchive.com/britishpathe/
which gave hundreds of clips.

Any other suggestions to narrow the search?

BTW, "Luftwaffe's Black Monday" has some interesting Allied footage of Bodenplatte
1-1-45
http://www.itnarchive.com/cgi-bin/ta....tmpl&v=tabbed