Immigration seems to be the most contentious topic in today's so-called "Brexit" referendum in the UK. A record number of people arrived in the UK in 2014, although bringing immigration down to the tens of thousands was a key election pledge of Prime Minister David Cameron. "Leave" campaigners say that promise is impossible to keep if Britain stays in the EU. But the "Remain" camp argues that immigrants bring more to the UK than they take out. Our team reports from England and Wales.
A programme prepared by Patrick Lovett, Aline Schmidt and Claire Pryde.