12 across. with overhanging facial hair or a scowling look (6-6) ?e?t? ?r?w??
16 across interpret incorrectly (7) ?i?????
20 across. something of that kind (8) ???h?i??
24 across nasal cavity (5) ?i???
13 down. advertising material sent by post (6,4) ????c? m?i?
14 down person who's obnoxious after too much beer ???e? l???
19 down top peers (5) ???e?