Back in the days when we only had terrestrial television, the BBC was considered one of our great national institutions. Whether for happy events, such as a great sporting fixtures, or sad commemorations, such as a state funeral, the BBC was a fulcrum around which the nation gathered. Never was this more true than during the Christmas period. That is why it is so dispiriting, albeit not unsurprising, to see the BBC’s dismal Christmas selection this year. For me, and I’m sure for many others, the reasons for disappointment are endless. There's Mrs Brown’s Boys Christmas Special (pictured) – a sitcom that deeply divides opinion