An offender is convicted of a serious violent offence if—
(a) the offender is—(i) convicted on indictment of an offence—(A) against a provision mentioned in schedule 1 ; or(B) of counselling or procuring the commission of, or attempting or conspiring to commit, an offence against a provision mentioned in schedule 1 ; and(ii) sentenced to 10 or more years imprisonment for the offence, calculated under section 161C ; or
(b) the offender is convicted on indictment and declared to be convicted of a serious violent offence under section 161B (3) or (4) .