Section 31 of the Police and Criminal Evidence Act: Where— (a) a person— (i) has been arrested for an offence; and (ii) is at a police sta

Section 31 of the Police and Criminal Evidence Act: Where— (a) a person— (i) has been arrested for an offence; and (ii) is at a police station in consequence of that arrest; and (b) it appears to a constable that, if he were released from that arrest, he would be liable to arrest for some other offence, he shall be arrested for that other offence.