HM Revenue and Customs
- Includes information about the UK's customs and tax department and includes the prototype on-line VAT (Value Added Tax) returns system.
- http://www.hmrc.gov.uk/

The Adjudicator's Office
- Explains the mechanism for complaining about the Inland Revenue and Valuation Office and HM Customs and Excise.
- http://www.adjudicatorsoffice.gov.uk/

Valuation Tribunal Service
- Independent body responsible for hearing appeals concerning tax valuations. Site provides details of VTS procedures and contacts.
- http://www.valuation-tribunals.gov.uk/

Valuation Office Agency
- Site explaining the role of the VOA in connection with council tax bands, rating assessments of non-domestic property, Capital Gains and Inheritance Tax valuations and "right to buy" determinations in the UK.
- http://www.voa.gov.uk/