Stacked versions like that (without a box as later on) were available from the start weren't they? As an alternate version anyway. I recall BBC Online used to use them.
I always thought that stacked logos were prohibited by the 'rules', particularly where the directorate, channel, nation or region name was larger than the BBC block text? I may be mis-remembering what I've read, and I was quite young when this look lanched, so can't remember the TV listings either!
I just thought it was strange as I'd never seen that variant of the logo before
Oh it's such a perfect day, I'm glad I spent it with you...