Quick –

No. 16, 542

Across: 1 Despatch; 5 Spot; 9 Spur; 10 Anecdote; 11 Rapid; 12 Clement; 13 Uncomfortable; 18 Coolness; 19 Gone; 20 Vitiate; 21 Slate; 22 Lady; 23 Asterisk.

Down: 2 Explain; 3 Portico; 4 Consciousness; 6 Proverb; 7 Theatre; 8 Accent; 13 Uncivil; 14 Clotted; 15 Menial; 16 Angular; 17 Linctus.