Evaluated listings and subject guides from people who know the sectors are the quickest way to home in on good quality sources of information. The British Library Business and IP Centre (BIPC) has, for a long time, had a wiki at http://bl-business-essentials.wikispaces.com/Industries listing web-based resources on a number of industries. These have been expanded into a very useful series of 30 PDF guides at http://www.bl.uk/bipc/dbandpubs/Industry%20guides/industry.html highlighting relevant industry directories, databases, publications and websites.

All of the guides show when they were last updated and the name of the person who has edited the guide. Not all of the resources are freely available on the web but you can access the information for free in the Business & IP Centre at the British Library, St Pancras. You will need a Reader Pass; details on how to obtain one can be found at http://www.bl.uk/bipc/visitus/howtouse/index.html.

The resources are split into Directories, Business Advice Sources, Market Research and Statistics, Trade Magazines and Newsletters, and Internet Resources. Even if you cannot make it to the BIPC to access the publications these guides are valuable pointers to the key sources of information on industry sectors. Highly recommended.