(1) Section 24 of the Principal Act is amended -

(a) in subsection (1) by substituting "520 contribution weeks" for "260 contribution weeks", and

(b) by inserting the following subsections after subsection (1):

"(1A) In the case of a person who becomes a voluntary contributor paying contributions under this Chapter before 6 April 2013, subsection (1) shall be read as if '260 contribution weeks’ were substituted for '520 contribution weeks’.

(1B) In the case of a person who becomes a voluntary contributor paying contributions under this Chapter on or after 6 April 2013 but before 6 April 2014, subsection (1) shall be read as if '364 contribution weeks’ were substituted for '520 contribution weeks’.

(1C) In the case of a person who becomes a voluntary contributor paying contributions under this Chapter on or after 6 April 2014 but before 6 April 2015, subsection (1) shall be read as if '468 contribution weeks’ were substituted for '520 contribution weeks’.".

(2) This section comes into operation on 6 April 2013.