Section 799 | Election not to apply full relief
From legislation.gov.uk
(1)An individual may elect for sections 792 to 794 (full relief) not to apply.
(2)The election—
(a)must specify the tax year for which it is made, and
(b)has effect for that year (unless withdrawn by notice given by the individual).
(3)An election or notice of withdrawal must be made or given to the Inland Revenue on or before—
(a)the first anniversary of the normal self-assessment filing date for the tax year for which the election is made, or
(b)such later date as the Inland Revenue may, in a particular case, allow.