The British Shops and Stores Association is to launch a sales monitor survey to provide independent retailers with a snapshot of trading patterns.
BSSA chief executive John Dean said government figures from the Office for National Statistics and other retail sales indices were skewed too much in favour of large multiples and chains, at the expense of smaller independents.
The BSSA will collate information provided by its 4,350 non-food members via an online questionnaire.
"Starting in the third quarter of this year, we will be encouraging our members to submit figures to the sales monitor online," Dean said.
The monitor will be published quarterly, with the first edition covering the quarter to September 2007.
To contribute, members will complete a form online within two weeks of the end of each quarter. The first report is due out at the end of October.
- The BSSA is seeking accreditation from City & Guilds, the UK's vocational awarding body, for its Oxford Summer School course for retailers.