1: Don't accept deterioration (7)

5: Duck turning up initially looking like a Walt Disney animated goose (7)

9: A flare-up is getting off 23-across (9)

10: Small change comes back as recurring fluctuations (5)

11: Arcking shot from Bill O'Brien (3)

12: In favour of change reduce mode of action (9)

13: Mere chance of depression interrupting peace (11)

16: Walesa still embodies how Nobel Laureates soar? (3)

18: Vet theatre opening 8-down (3)

19: A properly run lottery might be a complete success (1,5,5)

21: German award making press cranky (4,5)

22: Song is a gas (3)

23: City that cowboys used to avoid (5)

24: Ace practised a lot by female golfer in a state of decline (2,1,3,3)

26: Make money and set out to be serious (7)

27: A n-novel cordial (7)

1: Fatal crime may lead to damnation (6,3)

2: Go up cedar's first branch (5)

3: Equips for attacks (4)

4: Real idiot garbled opiniated commentary (9)

5: Feel sick from crack? (3)

6: Does the wandering hero duly hostess perplex? (7)

7: Recipient of drink describing gown with energy (9)

8: Continues wild parties after inauguration (5)

12: Sent one page rewritten in military lingo (11)

14: Cue involving one rest (9)

15: Beloved airman to a formation (9)

17: Essentially presents allegory conducive to isolation (9)

20: Ruse duck (5)

22: Acid destroyed brace (5)

24: Drawing, for example, a bit of a cartoon (3)

25: Inactive side (3)