Getting to the 1000 - The methodology

To build this list, our research partner Beauhurst combined key financial performance indicators and sector benchmarks that are available in its  online tool

Company status

Companies must be active and registered in the UK based on corporate structures as at December 2019. Companies that have a parent incorporated in a foreign country are excluded, except for specific tax shelters. Ltd, Plc and LLP entities are all considered. Investment vehicles and funds are excluded, as are charities and non-profit organisations.

Size and age

Independent company or consolidated group revenues must be from £6m–£250m, based on latest Companies House filings. Companies that have been incorporated after 1 November 2016 are excluded.

Financial performance

Each company’s average annual turnover growth rate is calculated over a three-year period (based on four sets of accounts, where four sets of accounts are available). The report does not reflect company accounts issued in 2020. The calculations are weighted to favour latest year growth. Any company with more than 20% deterioration in net assets over a three-year period is excluded.

Sector benchmarking

Having identified the long list, the eligible companies are then separated into their Standard Industrial Classification (SIC) groupings. Within each SIC sector, the companies are ranked by their individual growth rates, and those that have most outperformed their sector averages are identified.