sugarmagnolia - I think it is understandable that most people assume they are talking to someone from a Christian background (not the same thing as being a Christian) when they talk to someone in this country who is white (big assumption there - hope I haven't offended you). I think the last census said that 70% of people claim to be Christian. Of course, many are only nominal Christians and celebrate Christmas without really giving thought to the meaning of it. And many atheists (like my cousin and her family) celebrate the secular side of Christmas as it is a tradition they have grown up with. So for many people Christmas has little or no religious meaning, and it is hard for them to understand why someone like yourself, who has a faith that matters to you, doesn't just do the 'fun' parts. Incidentally, the tree has no Christian significance at all - it is a Pagan symbol that has been co-opted into Christianity.
I think that if the BBC took religious broadcasting seriously then it would be even-handed. The problem is it patronises all of us who believe, so we end up with anodyne rubbish like the Heaven and Earth Show or the platitudinous Songs Of Praise - religion lite, if you like. (And Judaism probably gets the worse treatment of all religions) The real danger is that because there is a dearth of decent religious broadcasting, the fanatics are moving in on the digital channels - certainly there are many 'Christian' channels now broadcasting in this country whose right-wing agenda I find offensive and disturbing.
wintersun - London has proportionately more Christians than anywhere else, and teh congregations are growing at the fastest rate. This si because of immigration from Eastern Europe, and especially Africa and the West Indies. Black churches are growing whereas others are declining.
Where I live in a small village the churches are well-attended - we have a mix of CofE, Catholic and Baptist. I have just left the CofE and am going to the Baptist church, but only until I find a church that reflects our beliefs a bit better. A lot of Christians are leaving the Church (esp. the CofE) because they no longer agree with what it stands for, but they are still Christian. HTH