Election 2015: Immigration and where is it welcome?

Unemployment has hit a seven-year low, but more than a third of the new jobs created last year went to workers from abroad.

Many experts and business leaders argue that a ready supply of overseas labour contributes to economic growth, but others say it suppresses wages.

In the last of our reports on major decisions facing the next government, our economics editor Robert Peston looks at how immigration affects the economy.