The average pay packet for Britain’s top fat cat bosses has surged by almost a fifth in the past year, research has revealed. Analysis by accountants Deloitte showed the typical FTSE 100 chief executive raked in almost £5.9million in pay and perks last year. The bumper sum was just under 18% up on the £5million the year before, meaning pay for those at the very top of business leapt around 4.5 times faster than the average UK worker. Deloitte combed through information on 55 FTSE 100 companies