This is an interesting.
I managed to get to this file which defines the page's content.
http://www.astoundinggroup.com/engine/webroms/LIVENovaTours/2012/nova_tours_brochure.xml
The videos are the links that end in .flv
e.g.
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/bridlington.flv
So to make a backup of them you'll need to extract all of those links and use a software that will download RTMP streams. A quick Google search revealed that Orbit Downloader maybe be able to download them. I haven't tried it.
I have made some scripts and extracted the list of the FLVs. Hope this helps.
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/blairgowrie.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/bridlington.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/criccieth.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/cumbria_new.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/falmouth.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/felixstowe.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/mill_rythe.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/kingussie.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/southport.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/irvine.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/norfolk.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/tynemouth.flv
rtmp://s3i5ar3o5quc0p.cloudfront.net/cfx/st/&id=AstoundingGroupSites/NOVA_TOURS/about_nova_tours.flv