Martin sits in a booth, half a sandwich lying on a plate, forgotten at his elbow. A glass of coke, swept out of the way of his construction space, sits dripping condensation onto the table top. He's rather too busy playing with Lego to bother with food.

Martin is building an aeroplane. He's not really that good with Airfix models yet, though his Dad is teaching him a bit, but he likes to build with Lego. If you get it wrong you can always start again.