HMRC - http://www.hmrc.gov.uk/
Companies House - http://www.companieshouse.gov.uk/
GOV.UK - https://www.gov.uk/
Financial Reporting Council - http://www.frc.org.uk
Financial Times - http://www.ft.com/home/uk
BBC Business News - http://www.bbc.co.uk/news/business/
London Stock Exchange - http://www.londonstockexchange.com
Bloomberg - http://www.bloomberg.com/
Primefind London - http://www.primefind.net/greater-london.htm