Library Services hold large collections of UK official publications in printed form and online via FindIt@Bham. Some publications are freely available from government websites. It is traditional to divide UK official publications into two main types: Parliamentary, which includes the devolved parliaments and assemblies, and Non-Parliamentary, e.g. the reports and other publications of individual government departments and agencies, such as the Department of Work and Pensions.
For more information on how to track down the different kinds of Official publications see the Official Publications guide.
Many literature searches will benefit from including reports and webpages which reflect the interests of the end-user, such as patient groups, service users, students or customers.
For information on charities, try Charity Choice.
You should also be able to find relevant pressure groups, unions and suchlike by searching the web.
Other useful websites include:
You may however sometimes get better results using Google Advanced Search with gov.uk as suffix.