If reintermediation is significant, banks will be taking back on to their balance sheets conduit and investment vehicle paper or just holding onto loans for longer than usual before they can be sold onto the capital markets. 19  Perhaps nothing illustrates this as cleanly as the advent of credit derivatives. Derivatives of any kind unbundle funding (and so liquidity risk) from the underlying risk to which an agent is seeking exposure via a particular contract. So a credit derivative unbundles credit risk from funding. This further complicates interpretation of the bank lending data (M4L). Imagine that, due to their customer networks and screening capability, banks originate all credit, but that they use credit-default swaps to shed a great portion of the credit risk via CDS to non-bank financial institutions. In the limit, this would be a world in which M4L correctly measured (bank) lending and M4 was one useful measure of “liquidity”. But it would also be a world in which shocks to credit conditions from capital and risk appetite worked largely through non-bank lenders, and in which shocks to liquidity worked largely through depositor confidence in the banking system. In the real world, this story underlines the need to look at total credit, and to analyse the monetary data with finesse. 20  See Bank of England Inflation Report, November 2007, Section 1 on “Money and Asset Prices”, pages 16-17.
But in some circumstances one can do better to approach things the other way round, starting with general credit conditions, examining the interactions of non-bank and bank lending, and then broad money as a (partial) counterpart to M4L. My remarks today will follow that structure, which will provide a framework for some observations about the current tightening in credit conditions, as well as about the preceding expansion. 1  “The transmission mechanism of monetary policy”, a paper by the Monetary Policy Committee at the Bank of England, April 1999 and Harrison R., K. Nikolov, M. Quinn, G. Ramsay, A Scott and R. Thomas, “The Bank of England Quarterly Model”, Bank of England 2005. The Bank’s wider “suite of models” does include richer asset price channels. BIS Review 149/2007  1  Credit Credit is, of course, vital to any economy, enabling households and firms to make choices about whether to bring forward or defer spending from income. There are conditions in which it would play no active role, passively reflecting cyclical fluctuations in output, employment and inflation. In a world of more or less complete transparency between borrowers and lenders, very low transactions costs, and very low risk aversion, access to credit would not be rationed; and ex ante yields on financial assets, including loans and bonds, would not embody risk premia. So if households and firms wanted to bring forward spending in the face of shocks to the economy, they would be able to do so restricted only by their need to remain solvent.