Stumbled across the archive section of the BBC website with a vintage Alouette on show - link below (afraid I can't extract the video, or find it on YouTube, but it should be viewable via the original site).
BBC - Archive - Aerial Journeys - Bird's Eye View | Green and Pleasant Land
The opening sequence shows G-AWLC (SA318C) which appears to have been registered to Heli-Union UK Ltd. 1968-1972.
Was the Alouette a particularly common camera platform in the UK?
Simon