A restraining order remains in force until—
(a) it is revoked or varied under section 38;
(b) it ceases to be in force under section 39;
(c) a forfeiture order or a confiscation order, as the case may be, is made in respect of property which is the subject of the order; or
(d) the property which is the subject of the order is forfeited to the Crown under any other enactment.