The across unclued lights are MORRIS marques and the down unclued lights are AUSTIN ones. The title is an anagram of AUSTIN and MORRIS. (Bullnose at 26 Down was a Morris marque, hence the wording in the clue — ‘misplaced’ as a Down solution instead of Across.) First prize Chris Butler, Borough Green, Kent Runners-up
The unclued lights (three of two words), individually or ‘19D’, are of a kind, represented in Brewer. Ignore all accents. Across 1 Buy a shirt? It’d be wrong for such appearance (12, two words) 10 Not supporting one with sex appeal, on reflection (4) 14 Material salesman (3) 15 Reserve
The twenty words revealed in the perimeter squares and the four 10-letter words can all be paired with both BLACK AND WHITE (hence the title). First prize Patricia Gibbs, Mountsorrel, Leics Runners-up Gemma Le Marquer, Twickenham, Middlesex; Hilda Ball, Belfast
One unclued Across light can be paired with the remaining unclued ones: similarly with the unclued Down lights. Across 12 Holes in supertanker, wrecked off North Cambodia (9) 15 Turning mad — silent strip (9) 16 Sickly marine after backing old Spanish province (6) 20 Approach shot goes round deserted vehicle (7) 21 But that