The unclued Across lights (including a pair) are of a kind and the unclued Down lights can be preceded by another (associated) word.
Across
1 To obtain acknowledgement, order direct (6)
13 Love making fuss about … (5)
15 … drink in The Wheatsheaf in encampment (5,4)
21 Coolness of pal stoned by wild mob (6)
22 Put up elsewhere, Spooner’s man phoned (2-4)
26 Perform some chorus in Gerontius? (4)
27 Noise from Paddington (3)
28 Article of faith explained (3)
29 Drop live commercial (4)
32 A French pair separate (8)
34 Petrol rating at once refined (6)
35 Imagine state getting centrally heated (6)
37 Stamp – one unused pair included (7)
39 1 amongst 27 absolutely exhausted (4,2)
42 Overwhelm unfashionable figure (9)
43 Fruit from the East in some basil guacamole (5)
45 Marsh – Yes! – tetchy somewhat extremely retiring (6)
46 Marsh terrapins from Merseyside rise out, oddly (6)
Down
1 Clique’s after-school organisation (4)
2 Said no to rubbish at end of road (7)
3 Time is up – give out (4)
4 Imply there isn’t a conflagration (7)
5 Holiday talked of at one’s home – it causes friction (5,3)
6 Capital where Tobago crashes (6)
8 Could be a club’s racing programme (4)
9 Tool-shed demolished for climbers’ needs (8)
11 Two little boys capture rosaceous plant (4.

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