Coffee Break Cryptic

17 September

Across

1 Stick held by African explorer (4)
3 Being most dilatory, I started afresh (8)
9 Draw animal, filling in only half (7)
10 Unexpected defeat for group at university? (5)
11 Wireless announcement in port (5)
12 No longer bound to get involved in duet (6)
14 Be back in time for discussion (6)
16 Collect James the actor (6)
19 Nut cracked for old man (6)
21 Cheers! Old man's providing food in bar (5)
24 Means to rebuild minister's house (5)
25 Divert public besieged by soldiers twice (7)
26 A key adviser somewhere in Australia (8)
27 Biblical king finally lacking as leading man (4)

Down

1 Pass over Oregon and notice nothing in state (8)
2 Famous saw (5)
4 Refuge unknown in a squalid district (6)
5 Cow kept by aged auntie (5)
6 Oriental festival on the first of November (7)
7 Carry child on back of bike (4)
8 Arrange roster for holiday location (6)
13 Do well with old Shakespearean duke (8)
15 Rest that's essential for tightrope-walker? (7)
17 Dress that makes a heartless tyrant rage (6)
18 A party radical is revered (6)
20 Character from Greece, part of a fearsome gang (5)
22 Hands, we hear, hesitate (5)
23 Outer Mongolia supports Forster or Austen novel (4)