The unclued Across lights are of a kind, as are the unclued Down ones, all verifiable in Chambers.
 

Across

7    Awkward tiff before mid-July is spasmodic (6)
11    Passionate entreaty from injured courier, around last month (10, three words)
13    Older noble initially gallant during those times (5)
14    Stock Exchange certificate St Paul found regularly (5)
15    Be determined by timeless article a very long time (7, two words)
17    Bringing ashore fish and it’s boxed! (7)
18    Indian comprehending most of old language (6)
19    Male Europeans consume unknown Mediterranean dishes (4)
22    Missed end of planned deadline – a note omitted (6)
24    Working in the parlour, she made out flippant graduate (9)
25    Guard, initially denied access (5)
26    Some tempest or monsoon (5)
28    Rejected and nullified, holding back information (9)
30    Three-masted boats – one unknown in loo (6)
39    Pipe second carol outside Kings (7)
40    Such dress will horrify sappers indoors (7)
42    Three cheers for the West Indian cricket captain (5)
44    Initiate a set, having the support beforehand (6)
45    Useless pastureland in Black Country town (6)
 

Down

2    Place of entertainment that’s new in district (5)
3    Green light changed, without the petty critic (7)
4    Gloomy donkey from central Greece, long ago (6)
5    Recitatives starting Scarlatti compositions even (5)
8    Dash over to meet a German to swap car? (7, hyphened)
10    Wished to have relaxed without you, we’re told (6)
12    Discussion meeting, lecture or online communication call (10)
16    Italian ode translated, based on the power of the mind (10)
20    God of marriage ignored European choral work (4)
21    SW US horseman cooked albacore around lake (9)
23    Walk briskly round construction toy (4)
27    Socialist crowd revised plan (7)
29    Spenser’s frightened a lad going round river (7)
30    Maybe, Gable or Monroe starts to film in thin fog (6)
31    Boil to come into view, with light (6)
32    Most expensive drink with no date (6, hyphened)
34    Record kept in Brussels may finally produce praise (6)
37    Some miser always up in the gods (5)
38    Caught on the track in the East Neuk (5)
 
A first prize of £30 for the first correct solution opened on 9 September. 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 ‘dictionary’.) Entries to: Crossword 2422, The Spectator, 22 Old Queen Street, London SW1H 9HP. Please allow six weeks for prize delivery.
 
Correction: in the preamble to No. 2421, ‘22 and 43’. Apologies for this mistake.