(1)This section applies to any person accused of an offence under the law of the United Kingdom who is returned to the United Kingdom in pursuance of extradition arrangements or as mentioned in section 19(1) above.
(2)If in the case of a person to whom this section applies either—
(a)proceedings against him for the offence for which he was returned are not begun within the period of six months beginning with the day of his arrival in the United Kingdom on being returned; or
(b)on his trial for that offence, he is acquitted or discharged under any of the following provisions—
(i)section 7(1) of the [1973 c. 62.] Powers of Criminal Courts Act 1973;
(ii)section 182 or 383 of the [1975 c. 21.] Criminal Procedure (Scotland) Act 1975;
(iii)section 5(1) of the [1950 c. 7. (N.I.)] Probation Act (Northern Ireland) 1950,
the Secretary of State may, if he thinks fit, on the request of that person, arrange for him to be sent back free of charge and with as little delay as possible to the jurisdiction of the foreign state, Commonwealth country or colony from which he was returned.