Accounting articles
http://www.accountingweb.co.uk
Accounting Standards Board
http://www.frc.org.uk/
Business issues
http://www.cantos.com/
Companies House
http://www.companies-house.gov.uk/
Department for Business, Enterprise and Regulatory Reform
http://www.berr.gov.uk
Published accounts
http://www.companyreporting.com/
International Accounting Standards Board
http://www.iasb.org.uk/
HM Revenue and Customs
http://www.hmrc.gov.uk/