Growing up, my younger brother Stephen and I were pretty much polar opposites. He loved planes and eventually oined the RAF as a trainee pilot; I'm a nervous flyer. He could tell you anything about Tottenham Hotspur, while I couldn't evell you the offside rule. And now there is the biggest difference of all – I am still here, and he is not. Losing a sibling, especially such a young one, feels as though a piece of yourself has been forcibly removed. The wound may heal, given time...