4.—(1) An indoor sports stadium, arena, centre, pool, rink or sports ground, on any occasion during which 500 or more people are expected to stand or move around at that venue.
(2) An outdoor sports stadium, arena, centre, pool, rink or sports ground, on any occasion during which 4,000 or more people are expected to stand or move around at that venue.
(3) A sports stadium, arena, centre, pool, rink or sports ground which has both indoor and outdoor areas, on any occasion during which—
(a)500 or more people are expected to stand or move around in the indoor areas of the venue, or
(b)4,000 or more people are expected to stand or move around in the venue.
(4) For the purposes of paragraph (3)(a), a corridor, stairwell, concourse or other area—
(a)from which it is not possible to view the competition, and
(b)which gives access to an area which is treated as an outdoor area under regulation 2(2)(g),
is also to be treated as an outdoor area.
(5) A venue does not come within—
(a)sub-paragraph (1) or (3)(a) on any occasion when it is attended by fewer than 500 people at the same time;
(b)sub-paragraph (2) or (3)(b) on any occasion when it is attended by fewer than 4,000 people at the same time.