make the necessary correction to those data;

supply the requestor with a copy of those data as so corrected; and

subject to subsection (3), if-

1. those data have been disclosed to a third party during the 12 months immediately preceding the day on which the correction is made; and
2. the data user has no reason to believe that the third party has ceased using those data for the purpose (including any directly related purpose) for which the data were disclosed to the third party,

before the expiration of that period-

1. by notice in writing inform the requestor that the data user is so unable and of the reasons why the data user is so unable; and
2. comply with that subsection to the extent, if any, that the data user is able to comply with that subsection; and

as soon as practicable after the expiration of that period, comply or fully comply, as the case may be, with that subsection.

in which the data are entered or otherwise recorded; and

which is available for inspection by the public,