The unclued lights are of a kind, verifiable in Brewer.
 

Across

 
1    Poet has overdose first (5)
6    More than one figure of speech is about Roman soldier (7)
11    Where to eat, relax and gossip once about god (10)
15    Note this colour for French artist (4)
16    Standard bill size (7)
17    Healthy condition isn’t safe without one unwinding (7)
18    US railroad 16 (3)
19    I tell Aaron about what’s rising from kinship (10)
21    Pious Jew proves who he is (5)
27    Determined to visit ancient city (4)
28    Souvenir from Cheshire, licensed (5)
30    Obsequious followers least prepared taking offal (10)
33    This outstanding rose would be needle-pointed (3)
35    Popular and Vauxhall model suggested for classic British car firm (7)
37    Sage cut dance (4)
38    Broadcast to the nation? Usually the last event (9, two words)
39    Could be a spectre of cats – feline characters wrong (10, two words)
40    Top of egg sliced off for poet’s luxurious food (7)
41    Druggies taking heroin from historical assistants (5)
 

Down

 
1    Delightful old fellow tourist who enters drunk (14, four words)
2    Tom’s 3-D representation of dialect (8)
3    Oblique reference to square pipe (6)
4    The way four sleep? (9)
5    Remains of contest (5)
6    Impress with short prayer for 1765 regulation (8, two words)
8    Preserve shot on course (5, two words)
9    A-spiring athletes? (14)
10    Indian water buffalo swallowing most of cold tincture (6)
12    Runs into emphatic disagreement for land (6)
14    A pole’s wonky – on an incline (6)
20    Withdrawn, being surprised having no answer (9, two words)
22    Just imagine! Amidst a landslide at Easter! (6)
23    Gloomy quality of operatic hero accepting one partner and the other (8)
26    Scottish sprat and fish on old stake (6)
29    Unimpaired international athlete’s first on court (6)
31    Amateur artist endlessly crafted mitres (6)
35    Tenanted offshore? (5)
 
A first prize of £30 for the first correct solution opened on 20 October. There are two runners-up prizes of £20. (UK solvers can choose to receive the latest edition of the Chambers Dictionary instead of cash— ring the word ‘Dictionary’.) Entries to: Crossword 2182, The Spectator, 22 Old Queen Street, London SW1H 9HP. Please allow six weeks for prize delivery.