Anyone can put information on the web, so how can you tell if it's reliable and accurate?
Useful websites that are relevant to the include:
Fabian Society http://www.fabians.org.uk/ The Fabian Society is an influential UK based left of centre think tank. It publishes research on politics and social policy in the UK.
UK Government https://www.gov.uk/ Gateway giving access to UK central and local government websites.
There is a huge range of information on the Internet, but you need to be vigilant about the quality of what you find. Using subject gateways and sites which are created by subject specialists will ensure that you find information that has been evaluated for its academic quality.