European Union http://europa.eu/index_en.htm responsible for EU wide legislation including Data Protection and Environmental Information implemented in UK by Acts of Parliament and/or Statutory Instruments

Ministry of Justice  http://www.justice.gov.uk UK government department responsible for introducing most information rights legislation

Dept of Environment, Food and Rural Affairs http://www.defra.gov.uk UK government department responsible for Environmental legislation

Infomation Commissioner's Office http://www.ico.gov.uk independent regulator for information rights legislation applicable throughout UK (DPA, PECR, FOI, EIR)

Scottish Information Commissioner's Office independent regulator for FOI (Scotland) Act http://www.itspublicknowledge.info/home/ScottishInformationCommissioner.asp  

Official Text of all legislation applicable to UK jurisdictions http://www.legislation.gov.uk