From the UK census:
In the decade to 2011 the immigrant population in Britain rose by 2.9m, roughly 5% of the population just in those ten years.
Only 59% declared themselves as Christians. 25% say they have no religion. 5% say they are Muslims. More than 176,000 said they were Jedi Knights.
Less than half of Londoners describe themselves as 'white British'.
In 4% of households no one speaks English as their main language.
I am not saying (at the moment) that there is anything wrong with this. But I do think we are nervous about discussing it and it clearly needs to be discussed.
Let's start with the BBC.