129Jurisdiction of civil courts
(1)Where a person subject to this Act is acquitted or convicted of an offence on trial by a court-martial or disciplinary court, or on summary trial under section forty-nine of this Act, a civil court shall be debarred from trying him subsequently for the same offence; but except as aforesaid nothing in this Act shall be construed as restricting the jurisdiction of any civil court to try a person subject to this Act for any offence.
(2)Where a person subject to this Act is acquitted or convicted of an offence on trial by a civil court, he shall not subsequently be tried under this Act for the same offence; and no person so convicted shall, by reason of the conviction or the offence, be subjected to any loss or forfeiture of seniority or of rate, of privilege in respect of leave, or of pay or service (other than pay and service in respect of time spent in civil custody pending trial, or while attending his trial, or while serving any sentence of imprisonment, corrective training, preventive detention, detention in a Borstal institution or other detention awarded by the civil court):
Provided that nothing in this subsection shall affect the power to discharge any person from Her Majesty's service as a person whose services are no longer required ; and notwithstanding anything in this subsection a rating who would otherwise be so discharged may, on his own application, be reverted in lieu of being so discharged.