Jonathan Heaf charts the evolution of the suit from workaday drudgery to everyday style.The humble, honest, hard working-suit: man's armour, a shield of fabric and cloth; a guy's sartorial stalwart; a defence against early-morning wardrobe indecision; a protection against any tendency to dress like an off-duty cricketer; a wingman to protect against the inability to dress one's age. School, however, can mar the initial introduction to the suit. The uniform I had to wear between the ages of 12 and 18, a navy structured blazer twinned with a pair of gravel-rough charcoal trousers, left me thinking that all a suit achieved was iron out any hint of personality. When you're a kid, suits aren't cool or erudite, savvy or sharp. Suits are...