30If a benefit, other than a return of contributions, becomes payable under this Act, it shall be paid in equal monthly instalments in arrears and shall continue, unless otherwise provided for in this Act, during the lifetime of the recipient, until the end of the month in which he or she dies and any amount of the monthly instalment in arrears that remains unpaid on the date of his or her death shall be paid
(a)
if the recipient was a judge, to the recipient’s surviving spouse if he or she can be found and is entitled to the surviving spouse’s pension under section 11,
(b)
if the recipient was a judge and no person can be paid under paragraph (a), to the recipient’s surviving common-law partner if he or she can be found and is entitled to the surviving common-law partner’s pension under section 11,
(c)
if no person can be paid under paragraph (a) or (b), in equal shares to the recipient’s children who can be found, or
(d)
if no person can be paid under paragraph (a), (b) or (c), to the recipient’s estate.