Across

 1 Heaven is in a ceremonial march (8)
 5 Horrified by a ghostly head, has temperature (6)
10 Public speech has to avoid extremes and show proportion (5)
11 He sold ale to get rented property (9)
12 Venerable old lady, one blending with charm and art (9)
13 African province of birth (5)
14 Paying your part of the bill? What a treat! (5)
16 Subversive brutes - a ring busted (8)
18 Suddenly attacked, exhausted after morning (8)
20 Cut into cubes, passed away holding key (5)
24 Sweet girl that is after a share (5)
25 European Community split in allowances for responses (9)
27 Breaking an idle set, they show the time and place on top of newspaper stories (9)
28 Relative returning from Greece in triumph (5)
29 Get off from the ship like a bachelor in a state of ignorance (6)
30 Abated after last month but expired (8)

Down

 1 Soft, dim ray deflected by huge construction (7)
 2 Deserter at a time sounds like knocking on the door (7)
 3 Burning in the environs of Delhi? This is the garment for you (5)
 4 Alas, Roy is heartless about remuneration (6)
 6 Forest of immature trees? (9)
 7 Evangelist could stop ale flowing (7)
 8 Child unsteady on his feet (7)
 9 Stupid chap with a stout nut? (7)
15 In the rolls, 'e is cast as a resident in the campus (9)
17 Give the girl a call for fish (7)
18 Agreed to a measure supported by two pressmen (7)
19 Container for ablution (7)
21 Summertime equipment for prisons (7)
22 Go down in a bad scene in extremes of dread (7)
23 For a lass he generates a lot of trouble (6)
26 Impart a slight trace of element, germanium in short (5)