A good number of the Pathe/Critical Past and Movietone 'unissued' films on Youtube are raw footage from British and Canadian cameramen. In fact they are the only source for Canadian raw footage after the fire destroyed the originals.
For example these films are nearly all Canadian unedited stock:
This is Anguerny
https://www.youtube.com/watch?v=6fOi6EVobxI
Crossing the Orne to Fleury sur Orne, August.
https://www.youtube.com/watch?v=Ul7h...rEoT4oSIa&t=0s
Same day/location as previous film and same 3.7 guns
https://www.youtube.com/watch?v=l5L5...youtu.be&t=104
GOODWOOD July 18-20. Some scenes shot in Cagny.
https://www.youtube.com/watch?v=RH1o...rEoT4oSIa&t=0s
GOODWOOD again.
https://www.youtube.com/watch?v=-Dtk...oSIa&index=104
There are many more than the above.
It is fairly simple to download Youtube films if you avoid Chrome!