Changes made by Pensions Act 2008 (Abolition of Protected Rights) 2011
S.I. 2011/1246
Made to Occupational Pension Schemes (Contracting-out) (Amount Required for Restoring State Scheme Rights and Miscellaneous Amendment) 1998
1 change. All changes made by Pensions Act 2008 (Abolition of Protected Rights) 2011
From legislation.gov.uk's record of changes, the official one: see it there.