(1) The Principal Act is amended -

(a) in section 2(1) by substituting the following definition for the definition of "qualifying contribution":

"'qualifying contribution' means the appropriate employment contri­bution or self-employment contribution which was paid in respect of any insured person or the appropriate optional contribution which was paid in respect of any optional contributor;",

(b) in section 13 -

(i) in subsection (2) (amended by section 3 of the Social Welfare and Pensions Act 2009) by deleting paragraphs (c) and (ca), and

(ii) by deleting subsection (3),

(c) in section 25(1) -

(i) in paragraph (a), by substituting "A contribution" for "Subject to paragraph (c), a contribution", and

(ii) by deleting paragraph (c),

and