The Traffic Signs Regulations and General Directions 2002

Signs to be placed only at specified sites or for specified purposes

27.  The sign shown in diagram 545, when placed in combination with—

(a)the plate shown in diagram 547.1; or

(b)the plate shown in diagram 546, 547.1 or 547.7 together with the light signal shown in diagram 4004,

may be placed only at or near a school crossing place.