Below is a list of B2B market research resources useful for those profiling or thinking of entering a new market...

Country and economic profiles

The CIA World Factbook - Comprehensive profiles of 266 countries covering history, people, government, economy, geography, communications, transportation, military, and transnational issues. 

UK Trade and Investment - UK Government agency providing country/sector profiles and other useful research resources for those seeking to enter a foreign market.

UK Office of National Statistics - Free access to data produced by the Office for National Statistics, and some data from government departments and devolved administrations

Eurostat - European Union statistical body providing a wealth of useful economic and social information concerning member countries

B2B market research reports and guides

Marketresearch.com - Searchable library of market research reports for purchase

Circle B2B Research - Specialist B2B agency with free articles on how to conduct bespoke research