By Morgan Jones A rental market that drains bank balances and instils constant dread of eviction is driving people away from London. The capital can’t survive unless it can sustain its young workers, says Morgan Jones I lived in London for the best part of a decade, and for most of that time assumed that I probably always would, not out of well-I’m-here-now passivity, but real enthusiasm. I love London; I love going on the tube in winter and I love the parks in summer at dusk. But I don’t live there anymore, because the city in the right light can be heaven, but the rental market is hell. It’s…