[Newsroom]

I don't know if they did them all (N6 - BBC One / N8 - BBC News 24 / N9 - BBC World). But Martin Lewis Design were the ones that did the BBC News 24 set design. Here is the render for the initial 1999 N8 set that I saved on to my Google Drive some time ago. Knew it would come in handy some day. They also did a render of what would become the N8 2003 set as well but I haven't got that render unfortunately:

Thanks so much for this. 

I do seem to remember seeing it this on a previous forum. Finding further reference to this is slightly difficult to the retirement of Martyn Lewis in 1999 and the new prominence of the Martin Lewis (money saving expert), not to mention that it was 'Martin' Lambie Nairn that initially conceptualised the 'rebrand'. 

Unfortunately I can't find any other mention in the archives of tvforum.