The unclued lights (one hyphened, one of two words), individually or as four pairs, are of a kind.
 

Across

 
4    Small thief accepting a lead album for cuttings (9)
10    Photographer’s kit cases with 40 systems (10)
11    Composer from Harlem, composed (6)
12    Unscrupulous member of the French Academy drops tenor (7)
14    Speeds new shipment NHS omitted (5)
15    Separate old coil (5)
16    A chore cooking vegetable (6)
22    He certainly puts his foot down (8)
23    Most haggard marine removed from unclued pair, maybe (7)
27    No organ here — now that’s a drama, we’re told (7)
29...