SOLUTION TO PRIZE CROSSWORD No 15,813:

ACROSS: 1 Seaweed. 5 Plucky. 9 Estuary. 10 Romance. 11 Pie. 12 Workmanship. 13 Erred. 14 Sound wave. 16 Top secret. 17 Aitch. 19 Coffee table. 22 Day. 23 Echoing. 24 Israeli. 26 Stream. 27 Demesne. DOWN: 1 Steeple. 2 At the drop of a hat. 3 Era. 4 Dryer. 5 Paramount. 6 Unman. 7 Kind-heartedness. 8 Temple. 12 Wedge. 14 Stratagem. 15 Drake. 16 Ticker. 18 Haywire. 20 Elite. 21 Blind. 25 Rum.