(suit, i.e. law). 10 VERB - VER(y) + B(ook). 11 BILLINGSGATE - S(ociety) inside BILLING (advertising) + GATE (money received from those attending). Famous London fish market . 13 CEREAL - sounds like "serial". 14 UNIONIST - (suit on)* around N.I. (Northern Ireland, i.e. his territory). 15 BABYISH - BY (close to)