(1) Subject to subsection (2), the weekly rate of blind pension payable in accordance with section 161B shall be increased-
(a) by the amount calculated in accordance with Part 3 of Schedule 4 where the beneficiary is living with, or is wholly or mainly maintaining, his or her spouse, civil partner or cohabitant, where that spouse, civil partner or cohabitant has not attained pensionable age, subject to the restriction that the beneficiary shall not be entitled for the same period to an increase of pension under this paragraph in respect of more than one person,
(b) by the amount set out in column (6) of Part 1 of Schedule 4 where the beneficiary is living alone, and
(c) by the amount set out in column (8) of Part 1 of Schedule 4 where the beneficiary is ordinarily resident on an island.
(2) An increase under subsection (1)(a) shall not be payable where the spouse, civil partner or cohabitant is-
(a) in receipt of any benefit, pension, assistance or allowance under Part 2 or this Part,
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