Her Majesties Revenue and Customs – www.hmrc.gov.uk

The Department of work and pensions – www.dwp.gov.uk

Companies House – www.companieshouse.co.uk

The Institute of Chartered Accountants in England and Wales – www.icaew.co.uk

The Chartered Institute of Taxation – www.tax.org.uk

The Department of Trade and Industry – www.dti.gov.uk

Sage – www.sage.co.uk

Digita – www.digita.co.uk