By James Price As exemplified by Margaret Thatcher’s inner circle, a bit of business nous can go a long way in Westminster, writes James Price Fifty years ago, Britain faced a set of challenges – structural, cultural, economic, you name it – that seemed insurmountable and got the better of several generations of the best and brightest minds Whitehall had to offer. Sharp-witted City A.M. readers will immediately see why I have been thinking about this time period in recent months. Then, a remarkable gathering of people coalesced around Mrs Thatcher, and were pivotal to the success of the revolu…