No filmic effect anywhere near it either!
Not even on the location work, which would have been on film in the original episode
I think the way the end credits were done is accurate for how the end credits looked during Season 2, with the cast in front of a still photo, then the rest of the credits static on a black background. The more familiar end credits came in with the move to colour in series 3.
That's interesting, I was going to comment on the end credits being the only thing that let it down, but if that is how the original would have been done then fair enough.
Inspired casting, with the possible exception of Jones who seemed to sound too much like Joe Pasquale at certain times
Write that down in your copybook now.