Getting to the 1000 - The methodology

Getting to the 1000 - The methodology

To build this list, the financial technology company duedil 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. 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 within the past three years (i.e. 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 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.


The list of companies in the 1000 Companies to Inspire Britain (the “Report”) has been compiled based on information made publicly available by each company, and neither LSEG nor DueDil take any responsibility in relation to such information. Furthermore, neither LSEG nor DueDil make any representation or warranty as to the accuracy, reliability or completeness of any of that public information, or of the Report.

This Report is not offered as advice on any particular matter and must not be treated as a substitute for specific advice. In particular, the information in the Report does not constitute professional, legal, regulatory, financial or investment advice and must not be used as a basis for making investment decisions. This Report is in no way intended, directly or indirectly, as an attempt to market or sell any type of financial instrument. Advice from a suitably qualified professional should always be sought in relation to any particular matter or circumstances.