Fabio Braggion and Steven Ongena have a post at Vox which looks at corporate leverage and firm-bank relationships in the UK from 1895 to 2009. They document an increase in corporate leverage from c.1970 and a simultaneous increase in firms having multiple relationships with banks. Braggion and Ongena argue that the increase in leverage can be traced to the deregulation of the UK banking system in the early 1970s and the breaking up of the banking cartel. Their working paper is available here.
Michael Aldous and I had our book The CEO: The Rise and Fall of Britain's Captains of Industry published a few weeks ago. You can find out more about it and buy it at Cambridge University Press's website . It is also available at Amazon , Waterstones , and Barnes & Noble . The CEO has already been reviewed in The Sunday Times , The Observer and Financial Times .