In theory, in the worst cases, the parts of the banks that are thought to be most important to keeping the rest of the financialsystem functioning smoothly, for instance their deposit books and payment systems, will be quickly cut out and transplanted into a healthy bank or kept on life support.
Over the past 18 months the firm has bought nine companies including an online self-publishing site, a financial-data firm and one with a technology that newspapers can license for an online-payment system.