One clued light is suitably dressed having taken notice of the title. By extension, all the unclued lights would be, if they took the same precaution (and would then be confirmed in Chambers). Ignore two accents.
Across
7 US battle giving quiet backing to spring festival (6)
12 Dava Sobel’s novel is no short piece, we’re told (9)
15 Origin can be suspect? (9)
16 Half the introduction to treatise on larval limb (6)
20 Coastal dweller at valley within African city (7)
21 Male hawk’s clasp (6)
24 Tumour affected amaretto (8)
27 Dull, tangled vegetation (3)
28 Affinity with Barrow, regularly (3)
32 Sheep country with no end of bush and tree (8)
34 Accompany someone somewhere and find it pleasant (6, two words)
35 Money given to London college with threatening comment (6, two words)
39 German composer cut a fowl (6)
43 Rocket providing a treat, on reflection (5)
44 Measuring instrument on island that’s awfully remote (9)
45 Little boy showed the way back in verse form (6)
46 Decline advice once about church (6)
Down
1 Overcharge for jewellery item (4)
2 Reckless youths are violent criminals around Turkey (7, two words)
3 Very keen on removing map from edges of platform (4)
4 Disturbed sea fish during journey (7, two words)
5 Snub heat? No! (8)
8 Ugly women on the bogs? (4)
9 Stirred oenomels by oneself (8)
10 Nothing delicate postponed (5, two words)
14 Worthy of censure, male seen in Elba, twice, drunk (9)
17 Cook, for instance, is hard-pressed (6)
18 Fabric from Star Inn (9)
19 Celibate having soup in bed (10, two words)
23 Marks from waters rising around excavation (6)
25 Simple posh menu created (8)
26 Hang 9 out, adding colour (8)
30 Male adult by crush at start of Edinburgh Fringe (7)
31 Checked family beside sea (7)
33 One human, topless, about vessel (6)
36 Olde-worlde ale, no top, tipped over (5)
38 Dark bluish Scots berry? (4)
A first prize of £30 for the first correct solution opened on 24 September.

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