These indices record changes in sales and rental values for residential properties and commercial office spaces for the various London markets where Cluttons operate. The data were collected from 1996 to 2017 and are represented as indices where 100 is the equivalent value at the start of the data collection period for each market.

The data are provided as an Excel document of indices where the columns are different markets (areas) and rows are quarters of years. Sales and lettings data, and commercial and residential records are all distinguished on different sheets.