From The Economist a few weeks ago (so this is for the outboard brain), an excellent leader and cover story about immigration – particularly to London. As a London fanatic (living in the outer suburbs) my greatest fear for my favourite city is that it should stagnate, slow down, dry up. Immigration has kept London alive and well for hundreds of years and, thankfully, it shows no sign of letting up. These pro-immigration articles are bracing, free-trader antidotes to know-nothing tabloid whinging.