This note introduces a new quarterly classification of bank advances. It will replace the quarterly analysis of advances published by the British Bankers' Association, which has been produced, with only minor amendments, for twenty years - and which, in recent years, has become somewhat out of date and, as described below, deficient in coverage. The last figures in the B.B.A. analysis related to mid-November 1966, and are given as usual in Table 13 of the statistical annex. The first figures in the new series will be for mid-February 1967: they were not available at the time that this Bulletin went to press, but as they will be released by the Bank of England about the middle of March, the opportunity is being taken to describe the new series here.