Surely the main reason with this couple were able to have so many children is that they knew that the more kids they had, the more money they were going to receive. I have worked out that they will be picking up approx £137 a week, nearly £600 a month in Child Benefit alone ! That is more than millions of OAPs get in their pensions.
I have said this before but we should seriously look at reducing Child Benefit for more than, say 3 or kids. It just rewards and encourages, feckless behaviour.