1An individual who has been convicted of an offence under section 23(1) may appeal against the conviction if—
(a)a TPIM notice, the extension of a TPIM notice, or the revival of a TPIM notice is quashed, or measures specified in a TPIM notice are quashed; and
(b)the individual could not have been convicted had the quashing occurred before the proceedings for the offence were brought.