On 6th April 2006 the provisions of the Occupational Pension Schemes (Modification of Subsisting Rights) Regulations 2006 came into effect. Codes of practice can be found at http://www.thepensionsregulator.gov.uk/codesOfPractice/
HMRC have published their newsletters. You can find these newsletters athttp://www.hmrc.gov.uk/pensionschemes/pts-newsletters.htm
HMRC has published forms to be used under the new regime. You can find these at: www.hmrc.gov.uk/pensionschemes/tax-simp-forms.htm
HMRC has published a guide to accounting for tax and online filing. You can find these at:http://www.hmrc.gov.uk/pensionschemes/accounting-for-tax.htm