(1) The contribution conditions for pension are -

(a) that the bereaved partner has qualifying contributions in respect of not less than 260 contribution weeks in the period beginning with his or her entry into insurance and ending immediately before the relevant time, and

(b) that, where at the relevant time, 4 years or longer has elapsed since the bereaved partner's entry into insurance -

(i) the yearly average for the 3 contribution years, or (where warranted by his or her insurance record) 5 contribution years, ending with the end of the last complete contribution year before the relevant time is not less than 39, or

(ii) the yearly average in respect of the period commencing at the beginning of the contribution year in which his or her entry into insurance occurred and ending at the end of the last complete contribution year before the relevant time is not less than 48,

but, where those conditions are not satisfied on the bereaved partner's insurance record, they may be satisfied on his or her deceased partner's insurance record, (the bereaved partner's insurance record being disregarded).