The unclued lights (including one of three words, two of two words, and a pair) are names for or are connected with a character. Two further four-letter names hidden in one row must be highlighted.
 

Across

1    Discharge sailor to work out (7)
6    New mums with potential addition (7)
11    Bravo, cool dude (6, two words)
12    Worldly nun made merry (7)
14    Senior statesmen have records (5)
15    One given Celtic name in English by American (5)
17    Singer’s volume is turned to zero by English girl (6)
19    Driver of workings girls reversed where Will lived (9)
21    Noise of bird is heavenly phenomenon (7)
24    Shut up a chimp in the house, say, with workout video (9, two words)
29    Race involving money’s over (7, two words)
30    Best and worst in extremely ordinary reconstruction of features (9)
32    Supplier of vehicle parts with a price rise (6)
33    Growth concealed by special actress (6)
36    Tip: where Joey lives (5)
37    Fantastic supporter of the royal family (7)
38    Pig had second birthday, lacking three weeks with the purpose specified  (6, three words)
39    Russian yet to be represented as reddish (7)
40    Pond-dweller abandons soft ground (7)
 

Down

1    Lacking aspiration, musical drama is what singer wants (7)
2    Transport by which you may get carried away (5)
3    Sign me on for a change (4)
4    Dropping head, one bound to startle old high-fliers (9)
5    Uproar is silent when leader’s protected by earls (6)
7    A French chair, to reject from office (6)
9    In island rising, gin treated tumours (8)
10    Shakespeare’s dull constable’s superior grass (7)
13    Engineer could prevent, or allow, wisp (8)
20    Fills folds again, say (8)
23    They were revolutionary believers eating bread (8)
25    ‘Awfully sorry’: the feminist’s response to a subject (8)
26    Soup, like tomato, turned up under ‘food’ (7)
28    Write about a politician, and preserve source (6)
29    Dwarf drinking rector’s Scotch whisky? (6)
31    Group of bright stars (5)
34    Bring up what one can bring up (4)
 
A first prize of £30 for the first correct solution opened on 7 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 2426, The Spectator, 22 Old Queen Street, London SW1H 9HP. Please allow six weeks for prize delivery.