CAROL
Provides an online company reports service covering US, European and Australian listed companies. Registration is required but access is free.
Hoovers
Provides information on listed companies including turnover, number of employees, Chairman, CEO/MD, FD, main competitors, company history and company news.
NB More detailed information is chargeable.
Trade Partners UK
Aimed at UK exporters. Also includes useful overview of 75 sectors and a searchable supplier database of 60,000 UK companies.
Companies House
Provides a comprehensive listing of UK registered companies including registered name, principal activities, date incorporated and date of latest return. Basic information is free but detailed information is chargeable.
Digital Look
Aimed at the UK investor, this site provides access to company financials and news by source.
Hemscott
Aimed at the UK investor, this site provides access to a wide range of company information.