MA
I have always noticed copyright dates on TV series and I always saw in credits of 70s programmes that the BBC didn't use dates until 1972 and 1976 was when Roman Numerals were introduced. However, it must have been late 76 as I have seen programmes with "BBC Colour c.BBC 1976" and "BBC Colour c.BBC MCMLXXVI. I know that by late 77 they had scrapped "BBC Colour" from the logo as I have seen at least one programme (possibly the 77 Porridge Christmas Special) that simply said "BBC MCMLXXVII" with no mention of colour.
I could be imagining this, but I seem to remember seeing the end credits of Sorry on UK Gold when waiting for the next programme and I seem to recall that, strangely, the credits said "BBC Colour c.BBC MCMLXXXII". But why would the BBC suddenly add "Colour" back to the logo on the copyright date? I'm sure I remember seeing this oddity, though.
I could be imagining this, but I seem to remember seeing the end credits of Sorry on UK Gold when waiting for the next programme and I seem to recall that, strangely, the credits said "BBC Colour c.BBC MCMLXXXII". But why would the BBC suddenly add "Colour" back to the logo on the copyright date? I'm sure I remember seeing this oddity, though.