Section 1217AD | “Core expenditure”
From legislation.gov.uk
(1)In this Part “core expenditure”, in relation to a video game, means expenditure on designing, producing and testing the video game.
(2)But the following descriptions of expenditure are not to be regarded as core expenditure for the purposes of this Part—
(a)any expenditure incurred in designing the initial concept for a video game;
(b)any expenditure incurred in debugging a completed video game or carrying out any maintenance in connection with such a video game.