1 Abrasive (8)
5 Type of volcanic rock (6)
9 Substantiates (8)
10 Capital of Canada (6)
12 Rulers (9)
13 A resin used in incense (5)
14 Bacterium (4)
16 Overtaking (7)
19 Pushed through (7)
21 Effusion (4)
24 Chieftain (5)
25 Pot or grass (9)
27 Wry (6)
28 Central themes of speeches (8)
29 A stage of life (2 words) (6)
30 A poor country in Africa (8)
Down
1 Region (6)
2 Stratified (6)
3 Warble (5)
4 Commonplace (7)
6 Meryl Streep and Judi Dench (9)
7 Scholarly (8)
8 Diagrammed outlines (8)
11 As Soon As Possible (4)
15 Making bigger (9)
17 A skin disease (8)
18 Space rock (8)
20 Darn! (4)
21 Apparel (7)
22 Convertible car (6)
23 Chinese cinnamon (6)
26 A type of spirit (5)