[Stuart]

That video says that The Movie Channel will broadcast movies in widescreen, did that ever happen, or was it just something that was being planned for the future?

The Movie Channel became Sky Movies Screen 2, then Sky MovieMax in 1998.  All the digital services went widescreen eventually in June 2003 after yet another rebrand to Sky Movies Max.

The first widescreen movie channel on BSkyB was Sky Premier Widescreen, itself a rebranding of the old Sky Movies/Screen 1.

In effect, it was the former BSB Movie Channel that was the last to go widescreen. They probably could have done it quicker had they stayed using DMAC on the Marcopolo satellites as the PQ was better. However, by that time the DMAC STBs were becoming useless when the satellites were sold off.