As the Tomorrow's World clip shows it was an odd way of doing 3D involving left and right movement. It meant it was viewable without glasses but limited the filming.
I seem to remember the EastEnders special having odd shots where a conversation between two characters was shown by the camera moving around them rather than the traditional way. Looked very odd.
Yep - this was a 'fake 3D' system that used the Pulfrich effect, with one eye dimmed slightly by a darker lens, and constant motion with parallax. The eye converts the parallax into realistic 3D - but it isn't stereoscopic.
It's been done a few times. ITV did some 3D stuff in the early 80s, based around some TVS science show. I'm not sure if that was a season of programmes or not.
TVS made a couple of 3D shows I think - both in the Real World series, and a couple of 3D movies (House of Wax was one I think) were shown around the same time.
This used conventional red/green (I think) lenses - but they pushed the saturation of the source cameras, which were colour not B&W, to give a form of colour 3D (though it wasn't great) Personally I thought the B&W clips were often a bit more successful. Think the research cameras they were using were from Philips in Breda.
Channel 4 used a different method of 3D a few years ago too
Yep - C4 used Blue/Yellow filters instead. They broadcast the 3D Colour Coronation stuff I think.