Great to see this sitcom up to its final episode. I don't think Series 4 has ever been repeated on either BBC1 or BBC2.
Not entirely sure about the ending, though. OK, Daphne voluntarily makes an advance to kiss Sam properly for the first time, but does that necessarily indicate that the relationship will develop further still, where they tie the knot? Maybe they should have ended it like they did with To the Manor Born, i.e. with their Wedding Day.
BTW, I enquired further about whether those episode titles of Series 4 are officially from the BBC or not, and they told me that as the Radio Times TV Listings website get all their programme information directly from the BBC (where they used the episode titles we are all familiar with), according to the BBC spokesperson who replied to me, they are official episode titles provided by the BBC. Why the BBC Episode Guide chose not to use those Series 4 episode titles, and instead just showed 'Episode 1', 'Episode 2' etc, is unclear. Make of this what you will.