Figures: All figures are in £ millions. Figures have therefore been rounded to the nearest £ million. Where a chart shows a value of £0 - this indicates a figure below £500,000.
Revisions: Each month small revisions to the figures may have been made since the previous release. This reflects additional information received.
Funds under management: From January 2007 Investment Association funds under management figures include additional institutional funds which were not previously included in the statistics.