23Where, by virtue of paragraph 22, a person suffers loss which, had it been suffered by virtue of paragraph (b) of section 12(1) of the 1979 Act, would (after allowing for the effect of subsections (2) and (3) of that section) have given rise before the designated day to an entitlement under that section, the person is entitled to claim compensation, by virtue of this paragraph, from the Keeper in respect of that loss.