By Rupert Hargreaves It’s easy to get caught up in all the negative news about London and the City, but it doesn’t take much effort to find something positive happening in the square mile. While the headlines are dominated by a steady trickle of takeovers stripping the London Stock Exchange, money is flooding into the capital elsewhere. The insurance industry is a classic example. The latest figures from the London Market Group (LMG), a trade body representing brokers and insurers, show that the number of people employed in London’s commercial insurance and reinsurance companies has hit an all…