11. Any arrears of, or any concessionary payment made to compensate for arrears due to the non-payment of—
(a)child tax credit;
(b)working tax credit;
(c)a payment which is made under any of—
(i)the Order in Council of 19th December 1881;
(ii)the Royal warrant of 27th October 1884;
(iii)the Order by his Majesty of 14th January 1922,
to a widow, widower or surviving civil partner under any power of Her Majesty otherwise than under an enactment to make provision about pensions for or in respect of persons who have been disabled or have died in consequence of service as members of the armed forces of the Crown and whose service in such capacity terminated before 31st March 1973,
but only for a period of 52 weeks from the date of the receipt of the arrears or the concessionary payment.