Athens Stock Exchange: Publicly held companies in Greece.
BT Group Telephone Directory: British telephone directory.
Charity Commission: The register for charities in England and Wales.
Companies House: Research companies in the UK.
Factary Phi: Database of donations to UK nonprofits.
GuideStar UK: Registered charities in England and Wales.
MorningStar: European business and stock information.
London Stock Exchange: Publicly held companies.
OurProperty.co.uk: Property sales back to 1995 in England, Wales & Scotland.
Prospect Research UK: Email discussion group for researchers in the United Kingdom.
Swiss Stock Exchange: Publicly held companies.
Valuation Office Agency: Real estate valuations in England and Wales
Zoopla: UK property values and sales.