There are some shots in the post 31 link which appear in the film - it doesn't have the same catalogue number as the IWM object you linked to, and as I have been viewing it to produce a catalogue summary I suspect it may not be the same. From viewing it, it appears to be 'outakes', so the RMY 131 title may be the newsreel/film released to the media at the time?
Once accessioned it will be added to the collections database - when it will be available for viewing and in what format is above my pay scale