Across
1
Smug observation, not involving me, to take place (10)
6
Four letters demanding one reply? (4)
9
Making a prune a cake's ingredient (10)
10
Far from sweet, Shakespearean turncoat you and I rejected (4)
12
What's sought by Smiley and Scarecrow? (12)
15
Lost energy having run out, took performance-enhancing drugs (7)
16
Routine spies' operation, capturing resistance that's turned (7)
17
Impertinent behaviour that's commemorated by a statue (7)
19
Initially 'Raymond', autistic, in notable movie also named ...? (4,3)
20
Forgetful episode: having ingested iodine, Spaniard meets consequence (6,6)
23
Some Cabernet and a bird (4)
24
Member of 'Generation Y' converted a linen mill (10)
25
Sample a slice of white sturgeon (4)
26
I travel on trail that's glittering (10)
Down
2
Spirit, to those listening, sounded like a cow (4)
3
Interpolated questionable stretch of inactivity (6,6)
4
Challenge Conservative nurse (7)
5
Cleared up slop: inn less likely to cause accidents (3-4)
7
Gran storms off, seeing bullies (6-4)
8
After rotting, erupt with odour – becoming this? (10)
11
Instance of longevity, diagnosing no upsets (1,4,7)
13
Young American on benefits given small amount of money (10)
14
Outdo frantic bigwigs (3,7)
18
More mouth-watering – Yankee with fewer teeth – not good! (7)
19
Discovered truth about what neglected corporation may have done (7)
21
Short day, then Everyman's in dingy drinking den (4)
22
Verbally mete out lashings (1,3)