A dwellinghouse in respect of which the standard community charge is, or would be, but for this provision, payable by a person who falls within the following description:—
(a) he is solely or mainly resident in other premises which are not a hospital, residential care home, nursing home, private hospital or hostel;
(b) he is so resident in those other premises for the purpose of receiving personal care which he requires by reason of old age, disablement, illness, past or present alcohol or drug dependence or past or present mental disorder;
(c) immediately before he became so resident in those other premises for the purpose mentioned in (b) above (or in other premises of the kind mentioned in (a) above for that purpose), he was a person
(i) who was solely or mainly resident in the dwellinghouse; or
(ii) who fell within the description mentioned in paragraph 5 of Schedule 1 to these Regulations and, as a consequence, in terms of that paragraph, the standard community charge was not payable in respect of the dwellinghouse; and
(d) since ceasing to be such a person as described in (c) above, he has been continuously solely or mainly resident in those other premises for the purpose mentioned in (b) above (or in other premises of the kind mentioned in (a) above for that purpose).