Paragraph 5
(1)
For the purposes of paragraph 3 a playing field with a hard porous surface which is large enough for the playing of team games may be treated as if it were twice its actual area.
(2)
In the case of a school which enjoys the benefit of facilities for—
(a)
regular instruction in swimming whether at the school or otherwise;
(b)
indoor instruction in team games whether at the school or otherwise; or
(c)
outdoor instruction in team games available otherwise than at the school or on synthetic surfaces at the school,
the minimum areas specified in paragraph 3 shall be reduced so far as is reasonable having regard to the facilities mentioned above.