Have I watched the film? Yes
Do I accept the figures? Not yet - as I haven't done any research into them.
My first query would be about 'children produced per couple' as most Muslims marry for life where as the western world has changed and doesn't anymore. A lot of people I know have children from previous marriages - are these taken into the sums?
Next they say that a figure of 2.11 children per family is required as no culture has ever survived on a figure of lower than 1.9. First of all, how many cultures have actually ceased to exist? Are we talking about cultures from thousands of years ago when average lifespan was around 40 years and I dread to think what infant mortality rate was?
Religions go through peaks and troughs - and some people are active in their religions whilst others are not.
Do you think that the 42 million Christians in this country are all 'actual' Christians who go to Church regularly etc?
When people say that there are 2.5 million Muslims in this country (actually 1.5 Million according to last census:
http://www.statistics.gov.uk/cci/nugget.asp?id =293) how many of them are actually practising Muslims?