[Blubatt]

They won't be HD, simple as.

Especially if they were shot on tape, which most of those would have mostly been (your usual "tape in the studio, film on location" type arrangement) To be honest the only things that would possibly be HD is any extras.

The disclaimer says "These episodes have been restored and remastered using the existing film where available, with any standard definition content upscaled during this process. The special features in this release are a mixture of standard and high definition. Due to the age of the original materials, the technical quality of the extras may vary in places. "

Now we already know remastering is supposed to mean "recreation" - ie where you dig out all the studio tapes and edit it all from scratch again.  But considering its probably safe to assume most of those don't exist anymore, the cheaper remastering option comes into play...  Which doesn't make it better.

A lot of it won't be HD, but I will say this: A lot of those shows will have done some shooting on film, which would be in HD. I know the Red Dwarf model shots were shot on film, and they do look impressive in Blu-Ray, but the majority of the show was filmed on tape. I am being pedantic, mind, but worth mentioning