Mark Wallinger ID review – who does he think he is?

Walking out with his shadow, painting at full stretch, Mark Wallinger takes a compelling look at identityThe shadow of a man slips down the street in broad daylight, tall, dark and mercurial. It slithers over kerbstones, sidles up walls and passes straight through the oncoming people. We recognise it as a shadow, but not as an actual person; in fact it could be anyone, although it might be possible to guess from the head shape, the watch strap, the trademark spectacles and loose shirt that