HMRC is responsible for collecting the bulk of tax revenue, as well as paying Tax Credits and Child Benefits, and strengthening the UK’s frontiers. This link will take you directly to the technical pages with regards to pensions on the HMRC website.
The Financial Conduct Authority (FCA) is an independent non-governmental body, given statutory powers by the Financial Services and Markets Act 2000. The FCA are responsible for regulating SIPP’s amongst many other financial products and services, however they are also an excellent source of independent information on the Financial Services Industry and it’s huge array of products and services.
Association of member-directed pension schemes. This is the Industry Association for those involved in the administration of, provision of and establishment of self administered arrangements.
The Pension Regulator
The Pensions Regulator is the UK regulator of work-based pension schemes.
Department for Work and Pensions.
Pensions Advisory Service
An independent non-profit organisation that provides free information, advice and guidance on the whole spectrum of pensions