[37D Release [on bail under section 37]: further provision]
[37D Release [on bail under section 37]: further provision]

[(1)     . . .

(2)     . . .

(3)     . . .

(4)     Where a person released on bail under section 37(7)(a) or 37C(2)(b) above returns to a police station to answer bail or is otherwise in police detention at a police station, he may be kept in police detention to enable him to be dealt with in accordance with section 37B or 37C above or to enable the power under [section 47(4A)] to be exercised.